"eduacsp2" wrote : | org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Exceção de E/S: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153094144)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))) | Looks like something has gone wrong on the Oracle side . Can you write a simple java standalone application which would use Oracle thin driver to connect to Oracle when you are experiencing the above problem ? Does this error appear every time Or it keeps on coming at random ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4114090#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...