Hi All I have installed a Solaris Intel Server with JBOSS 4.3 EAP and Oracle 10.2.0.1 client (64 bit). I can do a tnsping and sqlplus to the database with no problem, however, when I start JBOSS it gives me an error: 10:22:38,335 WARN [JBossManagedConnectionPool] Throwable while attempting to get a new connection: null org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: ORA-12154: TNS:could not resolve the connect identifier specified ) If I change the oci connect descriptor to include the full description from the tnsnames.ora file, the system starts up. If I use the thin connection it also works. I have also checked permissions of the $ORACLE_HOME/network/admin, the user has rights to it. i.e.: This does not work: <connection-url>jdbc:oracle:oci:@ORCL</connection-url> despite sqlplus user/pass@ORCL working, so does tnsping ORCL. This does work: <connection-url>jdbc:oracle:oci:@(description=(address=(host=hostname)(protocol=tcp)(port=1521))(connect_data=(sid=ORCL)))</connection-url> Any advice will be appreciated. Thank you Carlo View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4264546#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...