Error 2056 Trapped In 2PC On Transaction / ORA-600 /ORA-600 
(Doc ID 2073878.1)
Last updated on FEBRUARY 19, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
1. Alert log file shows the following error messages:
Error 2056 trapped in 2PC on transaction 68.2.98031. Cleaning up.
Error stack returned to user:
ORA-02056: 2PC: k2lcom: bad two-phase command number rdonly from coord
ORA-00600: internal error code, arguments: , , , , , , , , , , , 
2. Incident trace file shows no failing sql (no cursor) as well as failing function stack information, similar to the below
----- SQL Statement (None) -----
Current SQL information unavailable - no cursor.
ktc_die k2send kpotxcap kpotxen opiodr
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