User development, A new message was posted in the thread "How best to handle DB failover?": http://community.jboss.org/message/529175#529175 Author : Vicky Kak Profile : http://community.jboss.org/people/vickyk Message: --------------------------------------------------------------   Actually you are not using ha datasource, it seems the URL gets changed on the fly. The DB connections available in the pool are alive, the check-valid-connection when called will basically take longer time since the DB is locked, it is not closed/shutdown. If it would have been closed/shutdown I would have recommended you to try <use-fast-fail> as mentioned here http://community.jboss.org/wiki/ConfigJCACommon   In your case I would suggest you to write a custom MBean which will flush the pool by invoking flush() operation on one of the JCA infrastructure MBeans, check jboss.jca:* Mbeans ( ManagedConnectionPool::flush()). -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/529175#529175