Hello! I'm using a postgreSQL v8.0 running in an other server. I'v set a value of 10 as a min pool in my postgre-ds.xml. Then, running ManageEngine Application Manager 7. AppManager show 0 pooled connection for my database but 5 for DefaultDS : Hypersonic Database. Here's a portion of postgre-ds.xml | <min-pool-size>5</min-pool-size> | <max-pool-size>150</max-pool-size> | <idle-timeout-minutes>20</idle-timeout-minutes> | <!-- sql to call when connection is created--> | <new-connection-sql>SELECT 1</new-connection-sql> | | | <!-- sql to call on an existing pooled connection when it is obtained from pool | --> | <check-valid-connection-sql>SELECT 1</check-valid-connection-sql> | | <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) --> | <metadata> | My question is : Do JBoss creating the minimal pool when starting JBoss? Or maybe I'v a wrong setting in my XML? The problem : a first launch of my CMP Bean always fail. Throwing the next error: | 09:06:37,687 WARN [TransactionImpl] XAException: tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=Herimiaina/67, BranchQual=, localId=67] errorCode=XA_UNKNOWN(0) | org.jboss.resource.connectionmanager.JBossLocalXAException: Error trying to start local tx: ; - nested throwable: (org.jboss.resource.JBossResourceException: SQLException; - nested throwable: (java.sql.SQLException: ERROR: SET AUTOCOMMIT TO OFF is no longer supported | )) | at org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.start(TxConnectionManager.java:901) | at org.jboss.tm.TransactionImpl$Resource.startResource(TransactionImpl.java:2043) | at org.jboss.tm.TransactionImpl.enlistResource(TransactionImpl.java:563) | But reruning the bean immediatly success. I'v trying it using BMP now. When getting the connection in setContext() , I got the same problem. To solve it, I loop my code 4 time until I get a valid connection. And this work but add a heavy load to JBoss. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989167#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...