ORA-00054 is already mapped to CannotAcquireLockException and is described as "resource busy and acquire with NOWAIT specified" As pointed out in the associated JIRA issue, ORA-30006 is quite similar being described as "resource busy; acquire with WAIT timeout expired" This commit maps ORA-30006 to CannotAcquireLockException as well. Issue: SPR-9141