WARN [org.jboss.resource.connectionmanager.JBossManagedConnectionPool] (http-0.0.0.0-8881-1) Throwable while attempting to get a new connection: null
org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.)
JBOSS failed to establish connectivity to the database because the database was not available upon startup.
To remedy this issue, you must restart services on the application server to allow the database to become available to JBOSS:
/etc/init.d/vcmaster restart