1087 lines
38 KiB
Plaintext
1087 lines
38 KiB
Plaintext
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1 Overview
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Overview
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The GT.M Database Structure Editor, DSE, examines and repairs
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Greystone Technology Database Structure (GDS) database(s). GT.M uses
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Buffered Global (BG) and Mapped Memory (MM) access methods for GDS
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files. For more information on GDS, refer to the "Greystone Database
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Structure" chapter in the GT.M Administration and Operations Guide.
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MUPIP INTEG provides comprehensive error checking, which serves to
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verify the results of repairs undertaken with DSE. For more
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information on MUPIP INTEG, refer to the "MUMPS Peripheral Interchange
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Program" chapter in the GT.M Administration and Operations Guide. For
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more information on the use of DSE, refer to the "Maintaining Database
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Integrity" chapter in the GT.M Administration and Operations Guide.
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1 DSE_Functions
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Functions of DSE
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DSE is primarily a database repair utility.
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Use DSE to:
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o Dump parts of the database for troubleshooting database errors
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o Add or delete a record in a block
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o Update file, block or record header information
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o Update bit maps
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o Save copies of database fragments for analysis, audit or
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restoration.
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Use the DSE EXIT command to leave DSE.
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1 Command_Syntax
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Command Syntax
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The format for DSE commands is:
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Command qualifier
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DSE interprets all numeric input as hexadecimal, except for time
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values, the -BLK_SIZE=, -KEY_MAX_SIZE=, -RECORD_MAX_SIZE=,
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-REFERENCE_COUNT=, -TIMERS_PENDING= and -WRITES_PER_FLUSH= on CHANGE
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-FILEHEADER, and -VERSION= on the REMOVE and RESTORE commands. This
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convention corresponds to the displays provided by DSE and by MUPIP
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INTEG.
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1 ADD
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AD[D]
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The ADD command adds a record to a block.
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The format of the ADD command is:
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AD[D] [-B[LOCK]=block]
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For greater than level 0 blocks add:
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-STAR -POINTER=block
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or
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-OFFSET=offset|-RECORD=record -KEY=key -POINTER=block
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For level 0 blocks add:
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-OFFSET=offset|-RECORD=record -KEY=key -D[ATA]=string
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The ADD command requires either the -OFFSET or -RECORD qualifier to
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position the record in the block and either the -KEY or the -STAR
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qualifier to define the key for the block.
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The -STAR qualifier is not valid at level 0 (i.e., for a data block).
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The ADD command requires the -DATA qualifier at level 0 or the
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-POINTER qualifier at any other level to provide the content of the
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record.
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2 Qualifiers
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-BLOCK
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-B[LOCK]=block_number
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Specifies the block to receive the new record.
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On commands with no -BLOCK= qualifier, DSE uses the last block
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handled by a DSE operation. In this case, when no block has been
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accessed, .i.e., on the first block oriented command, DSE uses
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block one (1).
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-DATA
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-D[ATA]=string
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Specifies the data field for records added to a data block. Use
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quotes around string and escape codes of the form \a or \ab,
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where a and b are hexadecimal digits representing non-printing
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characters. \\ translates to a single backslash. The -DATA
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qualifier only applies at level 0 and is incompatible with the
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-STAR and -POINTER qualifiers.
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-KEY
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-K[EY]=key
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Specifies the key of the new record. Enclose MUMPS-style global
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references in quotes (""). The -KEY qualifier is incompatible
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with the -STAR qualifier.
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-OFFSET
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-O[FFSET]=offset
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Adds the new record at the next record boundary after the
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specified offset. The -OFFSET qualifier is incompatible with the
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-RECORD and -STAR qualifiers.
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-POINTER
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-P[OINTER]=pointer
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Specifies the block pointer field for records added to an index
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block. The -POINTER qualifier is incompatible with the -DATA
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qualifier and cannot be used at level 0.
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-RECORD
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-R[ECORD]=record_number
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Specifies a record number of the new record. The -RECORD
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qualifier is incompatible with the -OFFSET and -STAR qualifiers.
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-STAR
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-S[TAR]
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Adds a star record (i.e., a record that identifies the last
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record in an indexed block) at the end of the specified block.
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The -STAR qualifier is incompatible with all qualifiers except
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-BLOCK and -POINTER and cannot be used at level 0.
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1 ALL
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AL[L]
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The ALL command applies action(s) specified by a qualifier to all GDS
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regions defined by the current Global Directory. This is a very
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powerful command; use caution. Be especially careful if you have an
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overlapping database structure (e.g., overlapping regions accessed
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from separate application global directories).
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2 Qualifiers
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-BUFFER_FLUSH
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-B[UFFER_FLUSH]
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Flushes to disk buffers all regions specified by the current
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Global Directory. The -BUFFER_FLUSH qualifier is incompatible
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with the -RENEW qualifier.
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-CRITINIT
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-C[RITINIT]
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Initializes critical sections for all regions specified by the
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current Global Directory. The -CRITINIT qualifier is
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incompatible with the -RENEW, -RELEASE and -SEIZE qualifiers.
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-FREEZE
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-[NO]F[REEZE]
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Allows a user to freeze, or prevent updates to, GDS regions
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specified by the current Global Directory. The -FREEZE qualifier
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freezes all such GDS regions except those previously frozen by
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another user. Regions frozen by a particular user are associated
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with that user. A frozen region may be updated in one of two
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ways: The user who froze the region may unfreeze it with the
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-NOFREEZE qualifier; or another user may override the freeze
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injunction with the -OVERRIDE qualifier.
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The -NOFREEZE qualifier unfreezes only those GDS regions that
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were previously frozen by the operator. Once a region is
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unfrozen, it may be updated by any user. To unfreeze all GDS
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regions, use the -OVERRIDE qualifier.
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The -FREEZE qualifier is incompatible with the -RENEW qualifier.
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DSE releases -FREEZE when it EXITs. To hold all databases, enter
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ALL -FREEZE and then SPAWN to perform other operations.
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-OVERRIDE
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-O[VERRIDE]
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The -OVERRIDE qualifier is meaningful only with the -FREEZE or
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-NOFREEZE it unfreezes all GDS regions, including those frozen
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by other users. When used with -FREEZE, the -OVERRIDE qualifier
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freezes all GDS regions, including those frozen by other users,
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associating all such freezes with the current user. The current
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user must then use the -NOFREEZE qualifier to unfreeze the
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database; any other user attempting a -UNFREEZE would also have
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to include the -OVERRIDE qualifier.
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-REFERENCE
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-REF[ERENCE]
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Resets reference counts to 1 for all regions specified by the
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current Global Directory. The -REFERENCE qualifier is
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incompatible with the -RENEW qualifier.
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-RELEASE
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-REL[EASE]
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Releases critical sections for all regions specified by the
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current Global Directory. The -RELEASE qualifier is incompatible
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with the -CRITINIT, -RENEW and -SEIZE qualifiers.
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-RENEW
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-REN[EW]
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Reinitializes critical sections (-CRITICAL) and buffers
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(-WCINIT), resets reference counts to 1 (-REFERENCE_COUNT) and
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clears freeze flags for all regions specified by the current
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Global Directory (-NOFREEZE). -RENEW requires confirmation. The
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-RENEW qualifier is incompatible with all other qualifiers.
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-SEIZE
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-S[EIZE]
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Seizes the critical section for all regions specified by the
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current Global Directory. The -SEIZE qualifier is incompatible
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with the -CRITINIT, -RELEASE and -RENEW qualifiers.
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The SEIZE qualifier can be useful when you encounter a
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DSEBLKRDFAIL error, generated when DSE is unable to read a block
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from the database.
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-WCINIT
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-W[CINIT]
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Reinitializes buffers for all regions specified by the current
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Global Directory. -WCINIT requires confirmation. The -WCINIT
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qualifier is incompatible with the -RENEW qualifier.
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1 BUFFER_FLUSH
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B[UFFER_FLUSH]
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The BUFFER_FLUSH command flushes the current region's buffers to disk.
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The format of the BUFFER_FLUSH command is:
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B[UFFER_FLUSH]
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The BUFFER_FLUSH command has no qualifiers.
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1 CHANGE
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CH[ANGE]
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The CHANGE command changes fields of a file, block, or record header
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and the bit map.
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The CHANGE command either has a -FILEHEADER qualifier or an implicit
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or explicit -BLOCK qualifier plus one or more of their associated
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qualifiers to define the target of the change.
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2 Block_Qualifiers
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-BLOCK
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-BL[OCK]=block_number
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Specifies the block to modify. The -BLOCK qualifier is
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incompatible with the -FILEHEADER qualifier and all qualifiers
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related to -FILEHEADER.
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-BLOCK is the default qualifier. On commands with neither a
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-BLOCK nor a -FILEHEADER qualifier, DSE uses the last block
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handled by a DSE operation. In this case, when no block has been
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accessed, that is, on the first block-oriented command, DSE uses
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block one (1).
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-BSIZ
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-BS[IZ]=block_size
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Changes the block size field of the specified block. Decreasing
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the block size can result in loss of existing data. The -BSIZ
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qualifier is incompatible with all qualifiers except -BLOCK,
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-LEVEL and -TN.
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-LEVEL
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-L[EVEL]=level
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Changes the level field for the specified block. The -LEVEL
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qualifier is incompatible with all qualifiers except -BLOCK,
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-BSIZ and -TN.
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-TN
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-TN[=transaction_number]
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Changes the transaction number for the current block. When a
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CHANGE command does not include a -TN=, DSE sets the transaction
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number to the current transaction number. Manipulation of the
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block transaction number affects MUPIP BACKUP -INCREMENTAL. The
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-TN qualifier is incompatible with all qualifiers except -BLOCK,
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-BSIZ and -LEVEL.
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-OFFSET
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-OF[FSET]=offset
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Specifies the offset within the block of the target record. The
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-OFFSET qualifier is incompatible with all qualifiers except
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-BLOCK, -CMPC and -RSIZ.
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-RECORD
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-RE[CORD]=record_number
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Specifies the record number of the target record. The -RECORD
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qualifier is incompatible with all qualifiers except -BLOCK,
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-CMPC and -RSIZ.
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-CMPC
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-CM[PC]=compression_count
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Changes the compression count field of the specified record. The
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-CMPC qualifier is incompatible with all qualifiers except
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-BLOCK, -OFFSET, and -RECORD.
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-RSIZ
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-RS[IZ]=record_size
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Changes the record size field of the specified record. The -RSIZ
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qualifier is incompatible with all qualifiers except -OFFSET and
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-RECORD.
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2 File_header_qualifiers
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-FILEHEADER
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-FI[LEHEADER]
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Enables modification of specific fields in the file header. The
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-FILEHEADER qualifier is incompatible with the -BLOCK and all
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qualifiers related to -BLOCK (i.e., -BSIZ, -CMPC, -LEVEL,
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-OFFSET, -RECORD, -RSIZ and -TN qualifiers).
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-BLK_SIZE
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-BLK[_SIZE]=block_size
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Changes the decimal block size field of the current file. Use
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the -BLK_SIZE qualifier only in conjunction with the -FILEHEADER
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qualifier. Do not use this CHANGE qualifier except on
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instructions from Greystone.
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-BLOCKS_FREE
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-BLO[CKS_FREE]=free blocks
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Changes the free blocks field of the current file. Use the
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-BLOCK_FREE qualifier only in conjunction with the -FILEHEADER
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qualifier. Database operations maintain this field for the
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user's convenience. The field does not control any database
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operations.
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-B_COMPREHENSIVE
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-B_C[OMPREHENSIVE]=transaction_number
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Changes the transaction number in the fileheader of the last
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comprehensive backup to the value specified. Use this qualifier
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only in conjunction with the -FILEHEADER qualifier.
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-B_INCREMENTAL
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-B_I[NCREMENTAL]=transaction_number
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Changes the transaction number in the fileheader of the last
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incremental backup to the value specified. Use this qualifier
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only in conjunction with the -FILEHEADER qualifier.
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-B_RECORD
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-B_R[ECORD]=transaction_number
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Changes the transaction number in the fileheader of the last
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-RECORD backup to the value specified. Use this qualifier only
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in conjunction with the -FILEHEADER qualifier.
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-CORRUPT_FILE
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-CO[RRUPT_FILE]=value
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Sets the file_corrupt field in the file header. Possible values
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are: TRUE, FALSE and NOCHANGE. Use the -CORRUPT_FILE qualifier
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only in conjunction with the -FILEHEADER qualifier.
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WARNING: when DSE EXITs after a CHANGE -FILEHEADER -CORRUPT=TRUE
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without a matching CHANGE -FILEHEADER -CORRUPT=FALSE, the file
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becomes unavailable to all future access.
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-CURRENT_TN
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-CU[RRENT_TN]=transaction_number
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Changes the current transaction number for the current region.
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Use the -CURRENT_TN qualifier only in conjunction with the
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-FILEHEADER qualifier. This qualifier has implications only for
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MUPIP BACKUP -INCREMENTAL. Raising the -CURRENT_TN corrects
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block transaction number too large errors.
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-FLUSH_TIME
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-FL[USH_TIME][=delta_time]
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Changes the flush_time default interval (in delta_time). The
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time entered must be between 0 and 1 hour.
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Use the -FLUSH_TIME qualifier only in conjunction with the
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-FILEHEADER qualifier. Do not use this CHANGE qualifier except
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on instructions from Greystone. A -FLUSH_TIME with no value
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resets the -FLUSH_TIME to the default value. Input is
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interpreted as decimal.
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-FREEZE
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-FR[EEZE]=value
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Sets availability of the region for update. Possible values are:
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TRUE, FALSE and NOCHANGE. Use to "freeze" (disable database
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writes) or "unfreeze" the database. Use the -FREEZE qualifier
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only in conjunction with the -FILEHEADER qualifier.
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DSE releases -FREEZE when it EXITs. To hold the database(s),
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CHANGE -FILEHEADER -FREEZE=TRUE and then SPAWN to perform other
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operations.
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-KEY_MAX_SIZE
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-K[EY_MAX_SIZE]=key_max_size
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Changes the decimal value for the maximum allowable key size.
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Use the -KEY_MAX_SIZE qualifier only in conjunction with the
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-FILEHEADER qualifier. Reducing KEY_MAX_SIZE can restrict access
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to existing data and cause GT.M-generated errors. Do not create
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incompatible key and record sizes. If you make a permanent
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change to the key size using DSE, use GDE to check that the
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appropriate Global Directory contains the same key size for the
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region. For more information on key and record sizes, refer to
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the "Global Directory Editor" chapter in the GT.M Administration
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and Operations Guide.
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-NULL_SUBSCRIPTS
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-N[ULL_SUBSCRIPTS]=value
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Sets the acceptability of null subscripts in database keys.
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Possible values are: TRUE, FALSE and NOCHANGE. Use the
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-NULL_SUBSCRIPTS qualifier only in conjunction with the
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-FILEHEADER qualifier. Prohibiting null-subscripts can restrict
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access to existing data and cause GT.M generated errors.
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-RECORD_MAX_SIZE
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-REC[ORD_MAX_SIZE]=record_max_size
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Changes the decimal value for the maximum allowable record size.
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Use the -RECORD_MAX_SIZE qualifier only in conjunction with the
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-FILEHEADER qualifier. Reducing the RECORD_MAX_SIZE can restrict
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access to existing data and cause GT.M-generated errors. Do not
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create incompatible key and record sizes. If you make a
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permanent change to the record size using DSE, make sure GDE
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contains the same record size for the appropriate Global
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Directory. For more information on key and record sizes, refer
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to "Global Directory Editor" chapter in GT.M Administration and
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||
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Operations Guide.
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-REFERENCE_COUNT
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-REF[ERENCE_COUNT]=reference_count
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Sets a field that tracks how many processes are accessing the
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database from the current node. MUPIP INTEG and DSE use decimal
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numbers for -REFERENCE_COUNT. Use the -REFERENCE_COUNT qualifier
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only in conjunction with the -FILEHEADER qualifier. Restrict
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CHANGE -FILEHEADER -REFERENCE_COUNT to the case where the
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process running DSE has exclusive (stand-alone) access to the
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database file. When DSE has sole access to a database file the
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-REFERENCE_COUNT should be 1. This is an informational field and
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||
|
does not have any effect on processing.
|
||
|
|
||
|
-TIMERS_PENDING
|
||
|
-TI[MERS_PENDING]=timers_pending
|
||
|
Sets field that tracks the number of processes considering a
|
||
|
timed flush. Use the -TIMERS_PENDING qualifier only in
|
||
|
conjunction with the -FILEHEADER qualifier. Proper values are 0,
|
||
|
1, and 2. Do not use this CHANGE qualifier except on
|
||
|
instructions from Greystone.
|
||
|
|
||
|
-TOTAL_BLKS
|
||
|
-TO[TAL_BLKS]=total_blocks
|
||
|
Changes the total blocks field of the current file. Use the
|
||
|
-TOTAL_BLKS qualifier only in conjunction with the -FILEHEADER
|
||
|
qualifier.
|
||
|
|
||
|
WARNING: The total blocks field should always reflect the actual
|
||
|
size of the database. Change this field only if it no longer
|
||
|
reflects the size of the database.
|
||
|
|
||
|
-TRIGGER_FLUSH
|
||
|
-TR[IGGER_FLUSH]=trigger_flush
|
||
|
Sets the decimal value for the triggering threshold, in buffers,
|
||
|
for flushing the cache modified queue. Use the -TRIGGER_FLUSH
|
||
|
qualifier only in conjunction with the -FILEHEADER qualifier. Do
|
||
|
not use this CHANGE qualifier except on instructions from
|
||
|
Greystone.
|
||
|
|
||
|
-WRITES_PER_FLUSH
|
||
|
-WR[ITES_PER_FLUSH]=writes_per_flush
|
||
|
Sets the decimal number of blocks to write in each flush. Use
|
||
|
the -WRITES_PER_FLUSH qualifier only in conjunction with the
|
||
|
-FILEHEADER qualifier. Do not use this CHANGE qualifier except
|
||
|
on instructions from Greystone.
|
||
|
|
||
|
1 CLOSE
|
||
|
CL[OSE]
|
||
|
The CLOSE command closes the currently open output file. Use to close
|
||
|
the opened dump file.
|
||
|
|
||
|
The format of the CLOSE command is:
|
||
|
|
||
|
CL[OSE]
|
||
|
|
||
|
The CLOSE command has no qualifiers.
|
||
|
|
||
|
1 CRITICAL
|
||
|
CR[ITICAL]
|
||
|
The CRITICAL command along with its qualifiers displays and/or
|
||
|
modifies the status and contents of the critical section for the
|
||
|
current region. The critical section provides a control mechanism.
|
||
|
This field identifies, by its PID, the process presently managing
|
||
|
updates to database.
|
||
|
|
||
|
The format of the CRITICAL command is:
|
||
|
|
||
|
CR[ITICAL] -I[NIT]
|
||
|
-O[WNER]
|
||
|
-REL[EASE]
|
||
|
-REM[OVE]
|
||
|
-S[EIZE]
|
||
|
|
||
|
By default, the CRITICAL command assumes the -OWNER qualifier, which
|
||
|
displays the status of the critical section.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-INIT
|
||
|
-I[NIT]
|
||
|
Reinitializes the critical section. The -RESET qualifier causes
|
||
|
all processes actively accessing that database file to signal an
|
||
|
error. Do not use -INIT without the -RESET parameter when other
|
||
|
processes are accessing the region.
|
||
|
|
||
|
CAUTION: Using CRITICAL -INIT when the write owner of a critical
|
||
|
section is an active GT.M process may cause structural database
|
||
|
damage.
|
||
|
|
||
|
-OWNER
|
||
|
-O[WNER]
|
||
|
Displays the ID of the process at the head of the critical
|
||
|
section, the ID of the process running DSE and the count of
|
||
|
critical read owners. When the current process owns the critical
|
||
|
section, DSE displays a warning message. The -OWNER qualifier is
|
||
|
incompatible with other qualifiers.
|
||
|
|
||
|
Example:
|
||
|
|
||
|
DSE> critical-owner
|
||
|
|
||
|
Write critical section is currently unowned
|
||
|
|
||
|
-RELEASE
|
||
|
-REL[EASE]
|
||
|
Releases the critical section if the process running DSE owns
|
||
|
the section. The -RELEASE qualifier is incompatible with other
|
||
|
qualifiers.
|
||
|
|
||
|
-REMOVE
|
||
|
-REM[OVE]
|
||
|
Terminates any write ownership of the critical section. Use this
|
||
|
when the critical section is owned by a process that is
|
||
|
nonexistent or is known to no longer be running a GT.M image.
|
||
|
The -REMOVE qualifier is incompatible with other qualifiers.
|
||
|
|
||
|
CAUTION: Using CRITICAL-REMOVE when the write owner of a
|
||
|
critical section is an active GT.M process may cause structural
|
||
|
database damage.
|
||
|
|
||
|
-SEIZE
|
||
|
-S[EIZE]
|
||
|
Seizes the critical section if the section is available. The
|
||
|
-SEIZE qualifier is incompatible with other qualifiers.
|
||
|
|
||
|
1 DUMP
|
||
|
D[UMP]
|
||
|
The DUMP command displays blocks, records or file headers. DUMP serves
|
||
|
as one of the primary DSE examination commands. Use the error messages
|
||
|
reported by MUPIP INTEG to determine what to DUMP and examine from the
|
||
|
database. DUMP also transfers records to a sequential file for future
|
||
|
study and/or for input to MUPIP LOAD.
|
||
|
|
||
|
The DUMP command requires specification of either -BLOCK, -HEADER,
|
||
|
-RECORD or -FILEHEADER.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the starting block of the dump. The -BLOCK qualifier
|
||
|
is incompatible with the -FILEHEADER qualifier.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
Example:
|
||
|
|
||
|
DSE> dump -block=2
|
||
|
|
||
|
Block 2 Size 1B Level 0 TN 2
|
||
|
Rec:1 Blk 2 Off 7 Size A Cmpc 0 Ptr 8 Key ^a
|
||
|
7 : | A 0 0 61 0 0 8 0 0 0
|
||
|
| . . . a . . . . . .
|
||
|
|
||
|
Rec:2 Blk 2 Off 11 Size A Cmpc 0 Ptr B Key ^b
|
||
|
11 : | A 0 0 62 0 0 B 0 0 0
|
||
|
| . . . b . . . . . .
|
||
|
|
||
|
|
||
|
-COUNT
|
||
|
-C[OUNT]=count
|
||
|
Specifies the number of block headers or records to DUMP. The
|
||
|
-COUNT qualifier is incompatible with the -FILEHEADER qualifier.
|
||
|
|
||
|
-FILEHEADER
|
||
|
-F[ILEHEADER]
|
||
|
Dumps file header information. The -FILEHEADER qualifier is
|
||
|
incompatible with all other qualifiers.
|
||
|
|
||
|
-GLO
|
||
|
-G[LO]
|
||
|
Dumps the specified record or blocks into the current output
|
||
|
file in Global Output (GO) format. The -GLO qualifier is
|
||
|
incompatible with the -HEADER and -FILEHEADER qualifiers.
|
||
|
|
||
|
-HEADER
|
||
|
-[NO]H[EADER]
|
||
|
Specifies whether the dump of the specified blocks or records is
|
||
|
restricted to, or excludes, headers. The -HEADER qualifier is
|
||
|
incompatible with the -GLO and -FILEHEADER qualifiers.
|
||
|
|
||
|
By default, DUMP displays all information in a block or record.
|
||
|
|
||
|
-OFFSET
|
||
|
-O[FFSET]=offset
|
||
|
Specifies the offset of the starting record for the dump. If the
|
||
|
offset does not point to the beginning of a record, DSE rounds
|
||
|
down to the last valid record start (e.g., DUMP -OFF=10 starts
|
||
|
at -OFF=A if that was the last record). The -OFFSET qualifier is
|
||
|
incompatible with the -RECORD and -FILEHEADER qualifiers.
|
||
|
|
||
|
-RECORD
|
||
|
-R[ECORD]=record_number
|
||
|
Specifies the record number of the starting record of the dump.
|
||
|
The -RECORD qualifier is incompatible with the -OFFSET and
|
||
|
-FILEHEADER qualifiers.
|
||
|
|
||
|
1 EVALUATE
|
||
|
EV[ALUATE]
|
||
|
The EVALUATE command displays a number in both hexadecimal and
|
||
|
decimal. Use it to translate a hexadecimal number to decimal and vice
|
||
|
versa. The -DECIMAL and -HEXADECIMAL qualifiers specify the input base
|
||
|
for the number.
|
||
|
|
||
|
The format of the EVALUATE command is:
|
||
|
|
||
|
EV[ALUATE] -D[ECIMAL]
|
||
|
-H[EXADECIMAL]
|
||
|
-N[UMBER]=number
|
||
|
|
||
|
The -NUMBER qualifier is required.
|
||
|
|
||
|
By default, EVALUATE treats the number as having a hexadecimal base.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-DECIMAL
|
||
|
-D[ECIMAL]
|
||
|
Specifies that the input number has a decimal base. The -DECIMAL
|
||
|
qualifier is incompatible with the -HEXADECIMAL qualifier
|
||
|
|
||
|
-HEXADECIMAL
|
||
|
-H[EXADECIMAL]
|
||
|
Specifies that the input number has a hexadecimal base. The
|
||
|
-HEXADECIMAL qualifier is incompatible with the -DECIMAL
|
||
|
qualifier.
|
||
|
|
||
|
-NUMBER
|
||
|
-N[UMBER]=number
|
||
|
Specifies the number to evaluate. This qualifier is required.
|
||
|
|
||
|
Example:
|
||
|
|
||
|
DSE> evaluate-number=61
|
||
|
|
||
|
Hex: 61 Dec: 97
|
||
|
|
||
|
|
||
|
1 EXIT
|
||
|
EX[IT]
|
||
|
The EXIT command ends a DSE session.
|
||
|
|
||
|
The format of the EXIT command is:
|
||
|
|
||
|
EX[IT]
|
||
|
|
||
|
The EXIT command has no qualifiers.
|
||
|
|
||
|
1 FIND
|
||
|
F[IND]
|
||
|
The FIND command directs DSE to a given block or region. At the
|
||
|
beginning of a DSE session, use the FIND -REGION command to select the
|
||
|
target region.
|
||
|
|
||
|
The FIND command, except with the -FREEBLOCK and -REGION qualifiers,
|
||
|
uses the index tree to locate blocks. FIND can locate blocks only
|
||
|
within the index tree structure. If you need to locate keys
|
||
|
independent of their attachment to the tree, use the RANGE command.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the block to find. The -BLOCK qualifier is
|
||
|
incompatible with the -KEY and -REGION qualifiers.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
-EXHAUSTIVE
|
||
|
-E[XHAUSTIVE]
|
||
|
Instructs DSE to search the entire index structure for the
|
||
|
desired path or siblings. FIND -EXHAUSTIVE is useful in locating
|
||
|
blocks that are in the tree but not indexed correctly. The
|
||
|
-EXHAUSTIVE qualifier is incompatible with the -FREEBLOCK, -KEY
|
||
|
and -REGION qualifiers.
|
||
|
|
||
|
-FREEBLOCK
|
||
|
-F[REEBLOCK]
|
||
|
Finds the nearest free block to the block specified by -HINT.
|
||
|
The -FREEBLOCK qualifier is incompatible with all other
|
||
|
qualifiers except -BLOCK and -HINT. The -HINT qualifier is
|
||
|
required with the -FREEBLOCK qualifier.
|
||
|
|
||
|
-HINT
|
||
|
-H[INT]=block_number
|
||
|
Designates the starting point of a -FREEBLOCK search. The -HINT
|
||
|
qualifier can be used only in conjunction with the -FREEBLOCK
|
||
|
qualifier.
|
||
|
|
||
|
-KEY
|
||
|
-K[EY]=key
|
||
|
Searches the database for the block containing the specified
|
||
|
key. Enclose a MUMPS style key in quotes (""). The -KEY
|
||
|
qualifier is incompatible with all other qualifiers.
|
||
|
|
||
|
-REGION
|
||
|
-R[EGION][=region]
|
||
|
Switches to the named Global Directory region. The -REGION
|
||
|
qualifier is incompatible with all other qualifiers.
|
||
|
|
||
|
-REGION without a specified region, or -REGION=*, displays all
|
||
|
existing regions in the database.
|
||
|
|
||
|
-SIBLINGS
|
||
|
-S[IBLINGS]
|
||
|
Displays the block numbers of the logical siblings of the
|
||
|
specified block. The logical siblings are the blocks that
|
||
|
logically exist to the right and left of the given block in the
|
||
|
database tree structure. The -SIBLINGS qualifier is incompatible
|
||
|
with the -FREEBLOCK, -KEY and -REGION qualifiers.
|
||
|
|
||
|
1 HELP
|
||
|
H[ELP]
|
||
|
The HELP command explains DSE commands. The format of the HELP command
|
||
|
is:
|
||
|
|
||
|
H[ELP] [item]
|
||
|
|
||
|
Item tells HELP which information to display. Enter the DSE command
|
||
|
(item) after the HELP command or at the Topic prompt. Use <RETURN> or
|
||
|
<CTRL Z> to return to the DSE prompt.
|
||
|
|
||
|
1 INTEGRIT
|
||
|
I[NTEGRIT]
|
||
|
The INTEGRIT command checks the internal consistency of a non-bitmap
|
||
|
block. INTEG reports errors in hexadecimal notation.
|
||
|
|
||
|
The format of the INTEGRIT command is:
|
||
|
|
||
|
I[NTEGRIT] -B[LOCK]=block_number
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the block for DSE to check.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
1 MAPS
|
||
|
M[APS]
|
||
|
The MAPS command examines or updates bit maps.
|
||
|
|
||
|
MAPS forces blocks either -BUSY or -FREE. The -MASTER qualifier
|
||
|
reflects the current status of a local bit map back into the master
|
||
|
map. The -RESTORE qualifier rebuilds all maps and should be used with
|
||
|
a great deal of caution as it can destroy important information.
|
||
|
|
||
|
By default, MAPS shows the status of the bit map for the specified
|
||
|
block.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-BL[OCK]=block_number
|
||
|
Specifies the target block for MAPS. The -BLOCK qualifier is
|
||
|
incompatible with the -RESTORE_ALL qualifier.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block-oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
-BUSY
|
||
|
-BU[SY]
|
||
|
Marks the current block busy in the block's local map and
|
||
|
appropriately updates the master bit map. The -BUSY qualifier is
|
||
|
incompatible with all qualifiers except -BLOCK.
|
||
|
|
||
|
-FREE
|
||
|
-F[REE]
|
||
|
Marks the current block free in the block's local map and
|
||
|
appropriately updates the master bit map. The -FREE qualifier is
|
||
|
incompatible with all qualifiers except -BLOCK.
|
||
|
|
||
|
-MASTER
|
||
|
-M[ASTER]
|
||
|
Sets the master bit map bit associated with the current block's
|
||
|
local map according to whether that local map is full or not.
|
||
|
The -MASTER qualifier is incompatible with all qualifiers except
|
||
|
-BLOCK.
|
||
|
|
||
|
-RESTORE_ALL
|
||
|
-R[ESTORE_ALL]
|
||
|
Sets all local bit maps and the master bit map to reflect the
|
||
|
blocks used in the database file. Use RESTORE_ALL only if the
|
||
|
database contents are known to be correct, but a large number of
|
||
|
the bit maps require correction. The -RESTORE_ALL qualifier is
|
||
|
incompatible with all other qualifiers.
|
||
|
|
||
|
1 OPEN
|
||
|
OP[EN]
|
||
|
The OPEN command opens a file for sequential output of global variable
|
||
|
data. OPEN a file to which you want to "dump" information.
|
||
|
|
||
|
The format of the OPEN command is:
|
||
|
|
||
|
OP[EN] -F[ILE]=file
|
||
|
|
||
|
If an OPEN command does not have a -FILE qualifier, DSE reports the
|
||
|
name of the current output file.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-F[ILE]
|
||
|
-F[ILE]=file
|
||
|
Specifies the file to open.
|
||
|
|
||
|
1 OVERWRITE
|
||
|
OV[ERWRITE]
|
||
|
The OVERWRITE command overwrites the specified string onto the given
|
||
|
offset in the current block. Use extreme caution when using this
|
||
|
command.
|
||
|
|
||
|
The format of the OVERWRITE command is:
|
||
|
|
||
|
OV[ERWRITE] -D[ATA]=string
|
||
|
-O[FFSET]=offset
|
||
|
|
||
|
2 Qualifiers
|
||
|
-D[ATA]
|
||
|
-D[ATA]=string
|
||
|
Specifies the data to be written. Use quotes around string and
|
||
|
escape codes of the form \a or \ab, where a and b are
|
||
|
hexadecimal digits, for non-printing characters. \\ translates
|
||
|
to a single backslash.
|
||
|
|
||
|
-O[FFSET]
|
||
|
-O[FFSET]=offset
|
||
|
Specifies the offset in the current block where the overwrite
|
||
|
should begin.
|
||
|
|
||
|
1 PAGE
|
||
|
P[AGE]
|
||
|
The PAGE command sends one form feed to the output device. Use PAGE to
|
||
|
add form feeds to a dump file, making the hardcopy file easier to
|
||
|
read. If you plan to use the dump file with MUPIP LOAD, do not use
|
||
|
PAGE.
|
||
|
|
||
|
The format of the PAGE command is:
|
||
|
|
||
|
P[AGE]
|
||
|
|
||
|
The PAGE command has no qualifiers.
|
||
|
|
||
|
1 RANGE
|
||
|
RA[NGE]
|
||
|
The RANGE command finds all blocks in the database whose first key
|
||
|
falls in the specified range of keys. The RANGE command may take a
|
||
|
very long time unless the range specified by -FROM and -TO is close
|
||
|
together. Use FIND -KEY first to determine whether the key appears in
|
||
|
the tree.
|
||
|
|
||
|
The format of the RANGE command is:
|
||
|
|
||
|
RA[NGE] -F[ROM]=block
|
||
|
-T[O]=block
|
||
|
-L[OWER]=key
|
||
|
-U[PPER]=key
|
||
|
|
||
|
2 Qualifiers
|
||
|
-FROM
|
||
|
-F[ROM]=block_number
|
||
|
Specifies a starting block number for the range search.
|
||
|
|
||
|
By default, RANGE starts processing at the beginning of the
|
||
|
file.
|
||
|
|
||
|
-TO
|
||
|
-T[O]=block_number
|
||
|
Specifies an ending block number for the range search.
|
||
|
|
||
|
By default, RANGE stops processing at the end of the file.
|
||
|
|
||
|
-LOWER
|
||
|
-L[OWER]=key
|
||
|
Specifies the lower bound for the key range.
|
||
|
|
||
|
-UPPER
|
||
|
-U[PPER]=key
|
||
|
Specifies the upper bound for the key range.
|
||
|
|
||
|
1 REMOVE
|
||
|
REM[OVE]
|
||
|
The REMOVE command removes one or more records or a save buffer.
|
||
|
|
||
|
The format of the REMOVE command is:
|
||
|
|
||
|
REM[OVE] -B[LOCK]=block_number
|
||
|
-C[OUNT]=count
|
||
|
-O[FFSET]
|
||
|
-R[ECORD]=record_number
|
||
|
-V[ERSION]=version_number
|
||
|
|
||
|
The version number is specified in decimal.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the block associated with the record or buffer being
|
||
|
deleted.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, that is, on the first block-oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
-COUNT
|
||
|
-C[OUNT]=count
|
||
|
Specifies the number of records to remove. The -COUNT qualifier
|
||
|
is incompatible with the -VERSION qualifier.
|
||
|
|
||
|
By default, REMOVE deletes a single record.
|
||
|
|
||
|
-OFFSET
|
||
|
-O[FFSET]=offset
|
||
|
Specifies the offset of the record to remove. The -OFFSET
|
||
|
qualifier is incompatible with the -RECORD and -VERSION
|
||
|
qualifiers.
|
||
|
|
||
|
-RECORD
|
||
|
-R[ECORD]=record_number
|
||
|
Specifies the record number of the record to remove. The -RECORD
|
||
|
qualifier is incompatible with the -OFFSET and -VERSION
|
||
|
qualifiers.
|
||
|
|
||
|
-VERSION
|
||
|
-V[ERSION]=version_number
|
||
|
Specifies the decimal version number in decimal of the save
|
||
|
buffer to remove. -VERSION is required to REMOVE a SAVE buffer.
|
||
|
-VERSION is incompatible with all qualifiers except -BLOCK.
|
||
|
|
||
|
1 RESTORE
|
||
|
RES[TORE]
|
||
|
The RESTORE command restores saved versions of blocks.
|
||
|
|
||
|
The format of the RESTORE command is:
|
||
|
|
||
|
RES[TORE] -B[LOCK]=block_number
|
||
|
-F[ROM]=from
|
||
|
-R[EGION]=region
|
||
|
-V[ERSION]=version_number
|
||
|
|
||
|
The version number is specified in decimal.
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the block to restore.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
-FROM
|
||
|
-F[ROM]=block_number
|
||
|
Specifies the block number of the save buffer to restore.
|
||
|
|
||
|
By default, RESTORE uses the target block number as the SAVE
|
||
|
block number.
|
||
|
|
||
|
-REGION
|
||
|
-R[EGION]=region_number
|
||
|
Specifies the region of the saved buffer to restore.
|
||
|
|
||
|
By default, RESTORE uses SAVE buffers from the current region.
|
||
|
|
||
|
-VERSION
|
||
|
-V[ERSION]=version_number
|
||
|
Specifies the decimal version number of the block to restore.
|
||
|
The version number is required.
|
||
|
|
||
|
1 SAVE
|
||
|
SA[VE]
|
||
|
The SAVE command saves versions of blocks or displays a listing of
|
||
|
saved versions. Saved information is lost when DSE EXITs. Use with the
|
||
|
RESTORE command to move blocks. As a safety feature, use SAVE to
|
||
|
retain fallback copies of database blocks before changing them.
|
||
|
|
||
|
The format of the SAVE command is:
|
||
|
|
||
|
SA[VE] -B[LOCK]=block_number
|
||
|
-C[OMMENT]=string
|
||
|
-L[IST]
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BLOCK
|
||
|
-B[LOCK]=block_number
|
||
|
Specifies the block to save.
|
||
|
|
||
|
On commands with no -BLOCK= qualifier, DSE uses the last block
|
||
|
handled by a DSE operation. In this case, when no block has been
|
||
|
accessed, .i.e., on the first block-oriented command, DSE uses
|
||
|
block one (1).
|
||
|
|
||
|
-COMMENT
|
||
|
-C[OMMENT]=string
|
||
|
Specifies a comment to save with the block. Enclose the comment
|
||
|
in quotes (""). The -COMMENT qualifier is incompatible with the
|
||
|
-LIST qualifier.
|
||
|
|
||
|
-LIST
|
||
|
-L[IST]
|
||
|
Lists saved versions of specified blocks. The -LIST qualifier is
|
||
|
incompatible with the -COMMENT qualifier.
|
||
|
|
||
|
By default, SAVE -LIST provides a directory of all SAVEd blocks.
|
||
|
|
||
|
1 SHIFT
|
||
|
SH[IFT]
|
||
|
The SHIFT command shifts data in a block, filling the block with zeros
|
||
|
or shortening the block. The format of the SHIFT command is:
|
||
|
|
||
|
SH[IFT] -B[ACKWARD]=shift
|
||
|
-F[ORWARD]=shift
|
||
|
-O[FFSET]=offset
|
||
|
|
||
|
2 Qualifiers
|
||
|
-BACKWARD
|
||
|
-B[ACKWARD]=shift
|
||
|
Specifies the extent to which DSE should shift data backwards
|
||
|
towards the block header. The -BACKWARD qualifier is
|
||
|
incompatible with the -FORWARD qualifier.
|
||
|
|
||
|
-FORWARD
|
||
|
-F[ORWARD]=shift
|
||
|
Specifies the extent to which DSE should shift data forward
|
||
|
towards the end of the block. The -FORWARD qualifier is
|
||
|
incompatible with the -BACKWARD qualifier.
|
||
|
|
||
|
-OFFSET
|
||
|
-O[FFSET]=offset
|
||
|
Specifies the starting offset of the portion of the block to
|
||
|
shift.
|
||
|
|
||
|
1 SPAWN
|
||
|
SP[AWN]
|
||
|
The SPAWN command forks a child process for access to the shell
|
||
|
without terminating the current DSE environment. Use the SPAWN command
|
||
|
to suspend a session and issue shell commands such as MUPIP INTEG
|
||
|
-REGION or GDE. The SPAWN command leaves your terminal at the input
|
||
|
prompt of the shell of the spawned process.
|
||
|
|
||
|
The format of the SPAWN command is:
|
||
|
|
||
|
SP[AWN] [command]
|
||
|
|
||
|
The SPAWN command has no qualifiers.
|
||
|
|
||
|
1 WCINIT
|
||
|
W[CINIT]
|
||
|
The WCINIT command reinitializes the global buffers of the current
|
||
|
region. Because it cleans out the cache, WCINIT is a very dangerous
|
||
|
command and therefore should not be used except under Greystone
|
||
|
supervision.
|
||
|
|
||
|
WARNING: A WCINIT command issued while normal database operations are
|
||
|
in progress can cause catastrophic damage to the database.
|
||
|
|
||
|
The format of the WCINIT command is:
|
||
|
|
||
|
W[CINIT]
|
||
|
|
||
|
The WCINIT command has no qualifiers.
|
||
|
|
||
|
When you issue the WCINIT command, DSE issues the CONFIRMATION:
|
||
|
prompt. You must verify the WCINIT command by responding with a "YES."
|
||
|
|
||
|
If you do not confirm the WCINIT, DSE issues the message:
|
||
|
|
||
|
No action taken, enter yes at the CONFIRMATION prompt to initialize
|
||
|
global buffers.
|
||
|
|
||
|
|