RE: ORA-02056: 2PC state machine: bad two-phase command number

From: Powell, Mark D <mark.powell_at_eds.com>
Date: Wed, 5 May 2004 15:14:05 -0400
Message-ID: <564DE4477544D411AD2C00508BDF0B6A1CE0AB15@usahm018.exmi01.exch.eds.com>

Based on the error information for the listed codes it would appear that Oracle should clean this up given some time. Did Oracle manage to clean this up or are repeated error messages showing in the alert log?

$ oerr ora 02054
02054, 00000, "transaction %s in-doubt"
// *Cause: network or remote failure in 2PC.
// *Action: Notify operations; DBs will automatically re-sync when the
// failure is repaired. Monitor pending_trans$ for final outcome. $ oerr ora 02056
02056, 00000, "2PC: %s: bad two-phase command number %s from %s"
// *Cause: two-phase commit protocol error.
// *Action: recovery of transaction attempted. Monitor pending_trans$ table
to
// ensure correct resolution. Contact support.

If you have to clean this up manually then if you are using an undo tablespace be aware of a bug in versions 9.0, 9.1, and 9.2 that results in an ORA_30119 when you run dbms_transaction.PURGE_LOST_DB_ENTRY. If you hit it then you will probably need to check metalink for the bug and fix: alter session set "_smu_debug_mode" = 4;

HTH -- Mark D Powell --

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Singh, Ratnesh (GEI, GEFA, Contractor)
Sent: Wednesday, May 05, 2004 2:29 PM
To: oracle-l_at_freelists.org
Subject: ORA-02056: 2PC state machine: bad two-phase command number

Hi=20

this error happened on our prodn boxes, causing indoubt transactions. Metalink does not seem to have much info on this.=20

It mentioned distributed_lock_timeout, which we have set at 180. =20 Does it need to be higher ?
Anybody seen this error , and knows what it is ?

	Wed May  5 13:24:23 2004
	Error 2056 trapped in 2PC on transaction 28.5.51628. Cleaning up.
	Error stack returned to user:
	ORA-02054: transaction 28.5.51628 in-doubt
	ORA-02056: 2PC: 2PC state machine: bad two-phase command number 0

from =
prepared state(2)

	Wed May  5 13:24:23 2004
	DISTRIB TRAN =
1bba9.00000001C04EE8141C217F36843978DB9D51740BD3010ED5128B4F68
  	is local tran 28.5.51628 (hex=3D1c.05.c9ac)
  	insert pending prepared tran, scn=3D1064404425 (hex=3D0.3f7185c9)

thanks & regards
ratnesh=20

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Received on Wed May 05 2004 - 14:12:25 CDT