Database connection on POSTGRE required max_prepared_statement -------------------------------------------------------------- Key: JBTM-2781 URL: https://issues.jboss.org/browse/JBTM-2781 Project: JBoss Transaction Manager Issue Type: Bug Components: Transaction Core Reporter: Florian Mélot Assignee: Tom Jenkinson Priority: Minor Fix For: 5.3.5.Final max_prepared_statement is required on the file (postgre.conf) to connect on pgsql base. If this option wasn't activate, the method end is called twice on PGXAConnection Please find below original discussion : https://developer.jboss.org/message/958507#958507