22 lines
1.1 KiB
Markdown
22 lines
1.1 KiB
Markdown
# Resource Manager Configuration
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Apache ActiveMQ Artemis has its own Resource Manager for handling the lifespan of JTA
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transactions. When a transaction is started the resource manager is
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notified and keeps a record of the transaction and its current state. It
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is possible in some cases for a transaction to be started but then
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forgotten about. Maybe the client died and never came back. If this
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happens then the transaction will just sit there indefinitely.
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To cope with this Apache ActiveMQ Artemis can, if configured, scan for old transactions
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and rollback any it finds. The default for this is 3000000 milliseconds
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(5 minutes), i.e. any transactions older than 5 minutes are removed.
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This timeout can be changed by editing the `transaction-timeout`
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property in `broker.xml` (value must be in
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milliseconds). The property `transaction-timeout-scan-period` configures
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how often, in milliseconds, to scan for old transactions.
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Please note that Apache ActiveMQ Artemis will not unilaterally rollback any XA
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transactions in a prepared state - this must be heuristically rolled
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back via the management API if you are sure they will never be resolved
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by the transaction manager.
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