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ORA-01591: lock held by in-doubt distributed transaction string tips

Oracle Error Tips by Burleson Consulting (S. Karam)


Question:
  What does the ORA-01591 error indicate?


Answer:
The Oracle oerr command notes this on the ora-01591 error:

ORA-01591: lock held by in-doubt distributed transaction string

Cause:
Trying to access resource that is locked by a dead two-phase commit transaction that is in prepared state.

Action: The DBA should query the pending_trans$ and related tables, and attempt to repair network connection(s) to coordinator and commit point.

If timely repair is not possible, DBA should contact DBA at commit point if known or end user for correct outcome, or use heuristic default if given to issue a heuristic commit or abort command to finalize the local portion of the distributed transaction.

Oracle recommends this advice in finding the root problem of ORA-01591, suggesting examining the trace file for the ORA-01591 error. To set the event for the ORA-1591 trace, add this to the init.ora (spfile):

event = "1591 trace name errorstack level 10"

The next time this ORA-01591 error occurs, you will find a trace file in your user_dump_dest directory.

 
 
 
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