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Stopping a WebSphere Compute Grid Endpoint Server while a job is running can produce excessive Trace Messages



Document Author:

Don Bagwell


Document ID:

TD106131


Doc. Organization:

Advanced Technical Sales


Document Revised:

08/15/2013


Product(s) covered:

WebSphere Application Server for z/OS







Abstract: If any transactional batch job is running in a WebSphere Compute Grid Endpoint Server and the endpoint server is stopped, many trace messages may be written until the jobs end. The Stop will complete successfully, but you will see over 20 trace messages per second in the Endpoint server's control region SYSPRINT log during this period.

Cause:
The Endpoint Controller is waiting for the job to complete before it can continue with Stop processing. During this time, the Controller loops, checking for outstanding requests and writes ORB_Registry trace records until the Compute Grid job completes.

Resolving the Problem:
  1. Do not Stop an Endpoint server while jobs are running in it.
  2. The "GAPAgent" MBean "quiesceEndpoint" method could be called to quiesce the Endpoint Server. This code be implemented by writing code using the WAS admin client.

Sample Trace Messages:
Trace: 2013/07/02 09:13:49.177 02 t=8BF718 c=UNK key=S2 tag= (0400502E)
Description: No active Transactions
Function: BBO_BOA::context_disassociation(MVS::GTID *)
About to post BBO_BOA::deactivate_impl: no active transactions
Trace: 2013/07/02 09:13:49.178 02 t=8BFE88 c=UNK key=S2 tag= (0400502F)
Description: transactions_active no GTID_Rows
from filename: ./bbgoboai.cpp
at line: 6212
No Active Transactions in the GTID Hash Table:
Trace: 2013/07/02 09:13:49.178 02 t=8BFE88 c=UNK key=S2 tag= (0403402E)
Description: traceORBR_Registry
ORB_Request Target Operation : data_address=1598b7fe, data_length=12
...

Software Version:
  • WebSphere Application Server Version 8.0.0.6 on z/OS
  • WebSphere Extended Deployment Compute Grid Version 8.0.0.3 on z/OS



Classification:

Software

Category:

Operational Management

Solution(s):

Business Integration



Platform(s):

IBM System z Family

S/W Pillar(s):

IBM System z Software

O/S:

z/OS

Keywords:

WebSphere Extended Deployment, Compute Grid, WebSphere Batch, WCG, V.8.0.0.3, z/OS, stop server, quiesce, endpoint, server


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