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 DBA_PENDING_TRANSACTIONS and DBA_2PC_PENDING, and attempt to repair network connection(s) to coordinator and commit point. If timely repair is not possible, DBA should contact end user for rollback/commit the transection.

sqlplus / as sysdba;

SQL> SELECT * FROM DBA_2PC_PENDING;

SQL> ROLLBACK FORCE LOCAL_TRAN_ID;

SQL> commit;

SQL> alter system enable distributed recovery;

SQL> execute dbms_transaction.purge_lost_db_entry('LOCAL_TRAN_ID');

SQL > commit;

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