PQ78122: TRANSACTION ROLLBACK LEAVES UR IN FORGET STATE.

 A fix is available

Obtain the fix for this APAR



APAR status
Closed as program error.

Error description
The customer's application raised a java exception, which caused
WebSphere for z/OS to initiate a rollback on the tran. The
rollback caused WebSphere to leave tran's RRS UR in FGT state.
The workload encountered so many rollbacks (35,401) that RRS
took an 0C4 abend module ATRSMEND. RRS on other systems in the
sysplex attempted to take over for the first failed RRS
instance. Each attempt generated the same abend. In the end, RRS
was disabled across every system in the sysplex.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V5.0 for z/OS                                *
****************************************************************
* PROBLEM DESCRIPTION: RRS ABEND0C4/ABENDS0C4 in module        *
*                      ATRSMEND, followed by message           *
*                      BBOT0024A.                              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
In some cases, WebSphere did not drive the ATRAFGT service on
the RRS units of recovery (URs) it began.  This occurs when the
UR was driven for rollback, and there were no XA resources
enlisted in the transaction branch represented by the UR.  These
URs were forgotten when WebSphere was restarted.  Until then,
the URs are left in the 'in-forget' state.  In workloads where
rollbacks occur often, the number of RRS URs left in the
forget steadily grows.  Eventually, RRS will run out of contexts
and will take an ABEND0C4/ABENDS0C4 in module ATRSMEND.  When
RRS goes down, WebSphere cannot continue and message BBOT0024A
is issued, notifiying the operator that the workload has been
quiesced and that RRS must be restarted.
Problem conclusion
Code was added to forget the URs that have been driven for
rollback when there are no XA resources enlisted in the branch
of the transaction that they represent.

APAR PQ78122 is associated with SERVICE LEVEL W501001 of
WebSphere Application Server V5.0 for z/OS.
Temporary fix Comments
APAR information
APAR number PQ78122
Reported component name WEBSPHERE FOR Z
Reported component ID 5655I3500
Reported release 500
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2003-09-04
Closed date 2003-10-08
Last modified date 2003-11-02

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
BBOUBINF          

Publications Referenced

Fix information
Fixed component name WEBSPHERE FOR Z
Fixed component ID 5655I3500

Applicable component levels
R500 PSY UQ80952    UP03/10/14 P F310

  Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.


Document Information


Current web document: swg1PQ78122.html
Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PQ78122
IBM Group: Software Group
Modified date: Nov 2, 2003