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

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: 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.




ORA-01591: lock held by in-doubt distributed transaction string
The first thing to do is to check the result of these queries:
Check the following table:

select * from dba_2pc_pending;
select * from dba_2pc_neighbors;
select * from pending_trans$;
select * from pending_sessions$;
select * from pending_sub_sessions$;

From the above queries keep all the value of LOCAL_TRAN_ID in each table and try to force commit or rollback.

ALTER SYSTEM DISABLE DISTRIBUTED RECOVERY;
EXEC DBMS_TRANSACTION.rollback_force('LOCAL_TRAN_ID')
--this changed state prepared to forced_rollback after that
COMMIT ;
ALTER SYSTEM ENABLE DISTRIBUTED RECOVERY;
EXEC DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('LOCAL_TRAN_ID');
COMMIT;

Repeat each steps for each LOCAL_TRAN_ID, turn on recovery for distributed transaction
crosscheck these tables (must be empty):

select * from dba_2pc_pending;
select * from dba_2pc_neighbors;
select * from pending_trans$;
select * from pending_sessions$;
select * from pending_sub_sessions$;