I got this issue after adcfgclone procedure + changing apps password in TEST instance.
Starting concurrent program OEOIMP for concurrent request 54565534 (MODULE=Order Import)
Routine AFPCSQ encountered an ORACLE error. ORA-01005: null password given; logon denied
Review your error messages for the cause of the error. (=<POINTER>)
Shutting down Concurrent Manager : 07-SEP-2011 14:03:03
ORA-01012: not logged on
According the metalink the the action plan is to re-run the FNDCPASS procedure for changing apps password. But it doesn't helped.
Seems that the issue in concurrent manager queue.
Here the action plan for fix the issue:
1. Stop APPS tier.
2. Run adpreclone for appsTier in cloned instance.
3. Run adcfgclone appsTier again in cloned instance (it will re-create the queues).
4. Start APPS tier.
5. Re-check the issue.