diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/main/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScript.java b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/main/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScript.java
index 82072f6a49..f9c2153fbb 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/main/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScript.java
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/main/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScript.java
@@ -305,67 +305,70 @@ public class ExecuteGroovyScript extends AbstractProcessor {
     }
 
     /**
-     * init controller services
+     * init SQL variables from DBCP services
      */
     @SuppressWarnings("unchecked")
-    private void onInitCTL(HashMap CTL) throws SQLException {
-        for (Map.Entry e : (Set<Map.Entry>) CTL.entrySet()) {
-            if (e.getValue() instanceof DBCPService) {
-                DBCPService s = (DBCPService) e.getValue();
-                OSql sql = new OSql(s.getConnection());
-                sql.getConnection().setAutoCommit(false);
-                e.setValue(sql);
+    private void onInitSQL(HashMap SQL) throws SQLException {
+        for (Map.Entry e : (Set<Map.Entry>) SQL.entrySet()) {
+            DBCPService s = (DBCPService) e.getValue();
+            OSql sql = new OSql(s.getConnection());
+            //try to set autocommit to false
+			try {
+	            if (sql.getConnection().getAutoCommit()) {
+					sql.getConnection().setAutoCommit(false);
+	            }
+			} catch (Throwable ei) {
+				getLogger().warn("Failed to set autocommit=false for `" + e.getKey() + "`", ei);
+			}
+            e.setValue(sql);
+        }
+    }
+
+    /**
+     * before commit SQL services
+     */
+    private void onCommitSQL(HashMap SQL) throws SQLException {
+        for (Map.Entry e : (Set<Map.Entry>) SQL.entrySet()) {
+            OSql sql = (OSql) e.getValue();
+            if (!sql.getConnection().getAutoCommit()) {
+                sql.commit();
             }
         }
     }
 
     /**
-     * before commit controller services
+     * finalize SQL services. no exceptions should be thrown.
      */
-    private void onCommitCTL(HashMap CTL) throws SQLException {
-        for (Map.Entry e : (Set<Map.Entry>) CTL.entrySet()) {
-            if (e.getValue() instanceof OSql) {
-                OSql sql = (OSql) e.getValue();
+    private void onFinitSQL(HashMap SQL) {
+        for (Map.Entry e : (Set<Map.Entry>) SQL.entrySet()) {
+            OSql sql = (OSql) e.getValue();
+        	try {
+	            if (!sql.getConnection().getAutoCommit()) {
+    	        	sql.getConnection().setAutoCommit(true); //default autocommit value in nifi
+	            }
+        	} catch (Throwable ei) {
+        	    getLogger().warn("Failed to set autocommit=true for `" + e.getKey() + "`", ei);
+        	}
+            try {
+                sql.close();
+                sql = null;
+            } catch (Throwable ei) {
+            }
+        }
+    }
+
+    /**
+     * exception SQL services
+     */
+    private void onFailSQL(HashMap SQL) {
+        for (Map.Entry e : (Set<Map.Entry>) SQL.entrySet()) {
+            OSql sql = (OSql) e.getValue();
+            try {
                 if (!sql.getConnection().getAutoCommit()) {
-                    sql.commit();
-                }
-            }
-        }
-    }
-
-    /**
-     * finalize controller services
-     */
-    private void onFinitCTL(HashMap CTL) {
-        for (Map.Entry e : (Set<Map.Entry>) CTL.entrySet()) {
-            if (e.getValue() instanceof OSql) {
-                OSql sql = (OSql) e.getValue();
-                try {
-                    sql.getConnection().setAutoCommit(true); //default autocommit value in nifi
-                } catch (Throwable ei) {
-                }
-                try {
-                    sql.close();
-                    sql = null;
-                } catch (Throwable ei) {
-                }
-            }
-        }
-    }
-
-    /**
-     * exception controller services
-     */
-    private void onFailCTL(HashMap CTL) {
-        for (Map.Entry e : (Set<Map.Entry>) CTL.entrySet()) {
-            if (e.getValue() instanceof OSql) {
-                OSql sql = (OSql) e.getValue();
-                try {
-                    if (!sql.getConnection().getAutoCommit()) {
-                        sql.rollback();
-                    }
-                } catch (Throwable ei) {
+                    sql.rollback();
                 }
+            } catch (Throwable ei) {
+            	//the rollback error usually not important because it precessed with DML error that is really important
             }
         }
     }
@@ -379,6 +382,7 @@ public class ExecuteGroovyScript extends AbstractProcessor {
 
 
         HashMap CTL = new AccessMap("CTL");
+        HashMap SQL = new AccessMap("SQL");
 
         try {
             Script script = getGroovyScript(); //compilation must be moved to validation
@@ -393,6 +397,9 @@ public class ExecuteGroovyScript extends AbstractProcessor {
                         //get controller service
                         ControllerService ctl = context.getProperty(property.getKey()).asControllerService(ControllerService.class);
                         CTL.put(property.getKey().getName().substring(4), ctl);
+                    } else if (property.getKey().getName().startsWith("SQL.")) {
+                        DBCPService dbcp = context.getProperty(property.getKey()).asControllerService(DBCPService.class);
+                        SQL.put(property.getKey().getName().substring(4), dbcp);
                     } else {
                         // Add the dynamic property bound to its full PropertyValue to the script engine
                         if (property.getValue() != null) {
@@ -401,7 +408,7 @@ public class ExecuteGroovyScript extends AbstractProcessor {
                     }
                 }
             }
-            onInitCTL(CTL);
+            onInitSQL(SQL);
 
             bindings.put("session", session);
             bindings.put("context", context);
@@ -409,15 +416,16 @@ public class ExecuteGroovyScript extends AbstractProcessor {
             bindings.put("REL_SUCCESS", REL_SUCCESS);
             bindings.put("REL_FAILURE", REL_FAILURE);
             bindings.put("CTL", CTL);
+            bindings.put("SQL", SQL);
 
             script.run();
             bindings.clear();
 
-            onCommitCTL(CTL);
+            onCommitSQL(SQL);
             session.commit();
         } catch (Throwable t) {
             getLogger().error(t.toString(), t);
-            onFailCTL(CTL);
+            onFailSQL(SQL);
             if (toFailureOnError) {
                 //transfer all received to failure with two new attributes: ERROR_MESSAGE and ERROR_STACKTRACE.
                 session.revertReceivedTo(REL_FAILURE, StackTraceUtils.deepSanitize(t));
@@ -425,7 +433,7 @@ public class ExecuteGroovyScript extends AbstractProcessor {
                 session.rollback(true);
             }
         } finally {
-            onFinitCTL(CTL);
+            onFinitSQL(SQL);
         }
 
     }
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScriptTest.java b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScriptTest.java
index 8351e75aca..e275177325 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScriptTest.java
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/java/org/apache/nifi/processors/groovyx/ExecuteGroovyScriptTest.java
@@ -229,7 +229,7 @@ public class ExecuteGroovyScriptTest {
     @Test
     public void test_sql_01_select() throws Exception {
         runner.setProperty(proc.SCRIPT_FILE, TEST_RESOURCE_LOCATION + "test_sql_01_select.groovy");
-        runner.setProperty("CTL.sql", "dbcp");
+        runner.setProperty("SQL.mydb", "dbcp");
         runner.assertValid();
 
         runner.run();
@@ -244,7 +244,7 @@ public class ExecuteGroovyScriptTest {
     @Test
     public void test_sql_02_blob_write() throws Exception {
         runner.setProperty(proc.SCRIPT_FILE, TEST_RESOURCE_LOCATION + "test_sql_02_blob_write.groovy");
-        runner.setProperty("CTL.sql", "dbcp");
+        runner.setProperty("SQL.mydb", "dbcp");
         //runner.setProperty("ID", "0");
         runner.assertValid();
 
@@ -263,7 +263,7 @@ public class ExecuteGroovyScriptTest {
     public void test_sql_03_blob_read() throws Exception {
         //read blob from database written at previous step and write to flow file
         runner.setProperty(proc.SCRIPT_FILE, TEST_RESOURCE_LOCATION + "test_sql_03_blob_read.groovy");
-        runner.setProperty("CTL.sql", "dbcp");
+        runner.setProperty("SQL.mydb", "dbcp");
         runner.setProperty("ID", "0");
         runner.setValidateExpressionUsage(false);
         runner.assertValid();
@@ -280,7 +280,7 @@ public class ExecuteGroovyScriptTest {
     public void test_sql_04_insert_and_json() throws Exception {
         //read blob from database written at previous step and write to flow file
         runner.setProperty(proc.SCRIPT_FILE, TEST_RESOURCE_LOCATION + "test_sql_04_insert_and_json.groovy");
-        runner.setProperty("CTL.sql", "dbcp");
+        runner.setProperty("SQL.mydb", "dbcp");
         runner.setValidateExpressionUsage(false);
         runner.assertValid();
 
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_no_input.groovy b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_no_input.groovy
index 60f8782ebd..1f8da076f9 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_no_input.groovy
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_no_input.groovy
@@ -21,7 +21,6 @@ http://funnifi.blogspot.com/2016/04/sql-in-nifi-with-executescript.html
 and refactored for ExecuteGroovyScript 
 */ 
 
-//assume you defined CTL.conn property linked to desired database connection pool
 def flowFile = session.create()
 
 //flowfile.write defined here: org\apache\nifi\processors\groovyx\GroovyMethods.java 
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_01_select.groovy b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_01_select.groovy
index 8b0cc01e19..ba24f3b440 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_01_select.groovy
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_01_select.groovy
@@ -24,8 +24,8 @@ and refactored and simplified for ExecuteGroovyScript
 def flowFile = session.create()
 
 flowFile.write("UTF-8"){wout -> 
-  //assume CTL.sql property is linked to desired database connection pool
-  CTL.sql.eachRow('select * from mytable'){ row->
+  //assume SQL.mydb property is linked to desired database connection pool
+  SQL.mydb.eachRow('select * from mytable'){ row->
     wout << row.name << '\n'
   }
 }
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_02_blob_write.groovy b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_02_blob_write.groovy
index 28563e52bd..f4c0675497 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_02_blob_write.groovy
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_02_blob_write.groovy
@@ -26,7 +26,7 @@ flowFile.read{ rawIn->
 		p_id   : flowFile.ID as Long,
 		p_data : Sql.BLOB( rawIn ),
 	]
-	assert 1==CTL.sql.executeUpdate(parms, "update mytable set data = :p_data where id = :p_id")
+	assert 1==SQL.mydb.executeUpdate(parms, "update mytable set data = :p_data where id = :p_id")
 }
 //transfer original to output
 REL_SUCCESS << flowFile
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_03_blob_read.groovy b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_03_blob_read.groovy
index b37ff03bf0..4677740d0b 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_03_blob_read.groovy
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_03_blob_read.groovy
@@ -19,7 +19,7 @@ def flowFile = session.create()
 //read blob into flowFile content
 flowFile.write{out->
 	//get id from property with name ID
-	def row = CTL.sql.firstRow("select data from mytable where id = ${ ID.value as Long }")
+	def row = SQL.mydb.firstRow("select data from mytable where id = ${ ID.value as Long }")
 	assert row : "row with id=`${ID}` not found"
 	//write blob stream to flowFile output stream
 	out << row.data.getBinaryStream()
diff --git a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_04_insert_and_json.groovy b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_04_insert_and_json.groovy
index 002438fe1c..7a9752cdca 100644
--- a/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_04_insert_and_json.groovy
+++ b/nifi-nar-bundles/nifi-groovyx-bundle/nifi-groovyx-processors/src/test/resources/groovy/test_sql_04_insert_and_json.groovy
@@ -40,14 +40,14 @@ rows.each{row->
 	//at this point row is a map with keys corresponding to mytable column names.
 	//build query:  insert into mytable(a,b,c,...) values(:a, :b, :c, ...)
 	//and pass row-map as an argument to this query
-	CTL.sql.executeInsert(row, "insert into mytable( ${row.keySet().join(',')} ) values( :${row.keySet().join(', :')} )")
+	SQL.mydb.executeInsert(row, "insert into mytable( ${row.keySet().join(',')} ) values( :${row.keySet().join(', :')} )")
 	//create new flowfile based on original without copying content, 
 	//write new content and add into outFiles list
 	outFiles << flowFile.clone(false).write( "UTF-8", JsonOutput.toJson(row) )
 }
 
 //just easier to assert sql here
-assert 2+rows.size() == CTL.sql.firstRow("select count(*) cnt from mytable").cnt
+assert 2+rows.size() == SQL.mydb.firstRow("select count(*) cnt from mytable").cnt
 
 flowFile.remove()
 //transfer all new files to success relationship