PQ86845: MQ clients lose topic subscriptions if WAS, using embedded MQ, is stopped and restarted

 Fixes are available

5.1.1: WebSphere Application Server Version 5.1 Fix Pack 1 (Version 5.1.1)
5.1.1: WebSphere Application Server Version 5.1 Fix Pack 1 (Version 5.1.1)



APAR status
Closed as program error.

Error description
If WAS is configured to have JMS topics that are subscribed to
by clients (listeners) and WAS is stopped and restarted, it
loses the registered topic subscribers.  This is for WAS using
embedded messaging.
.
The client applications will not be aware of the problem.  It
will look to them as if there are no messages to receive.
.
A trace of the JMS components will show something like the
following:
2004-01-13 12:13:11.656000     4560
>> {
com.ibm.broker.server.MQClientRecord@1aa843e0.getPublisherTopicT
able
2004-01-13 12:13:11.656000     4560
>> }
com.ibm.broker.server.MQClientRecord@1aa843e0.getPublisherTopicT
able , {}
2004-01-13 12:13:11.656000     4560
>> }
com.ibm.broker.server.ClientService@1ec043eb.isMQClientRecordEmp
ty , rc=true
2004-01-13 12:13:11.656000     4560
>> { Java_com_ibm_broker_server_BrokerDatabase_deleteClient
2004-01-13 12:13:11.656000     4560
>> { ImbPubSubDatabase::pubSubDatabase
2004-01-13 12:13:11.656000     4560
>> } ImbPubSubDatabase::pubSubDatabase
2004-01-13 12:13:11.656000     4560
>> { ImbPubSubQueueDatabase::deleteClient
2004-01-13 12:13:11.656000     4560
>> { ImbResourceManager::resource ComIbmResourceManager
ComIbmResourceManager ,
ComIbmMQConnectionManager, ComIbmResourceManager
2004-01-13 12:13:11.656000     4560
>> } ImbResourceManager::resource ComIbmResourceManager
ComIbmResourceManager , ComIbmResourceManager
2004-01-13 12:13:11.656000     4560
>> { ImbMqManager::removeMessage ComIbmMQConnectionManager
ComIbmMQConnectionManager , SYSTEM.BROKER.CLIENTS.DATA,
000000000000000000000000000000000000000000000000,
ComIbmMQConnectionManager
2004-01-13 12:13:11.656000     4560
>> { ImbBuffer::ImbBuffer , 0, 927717128, 0
Local fix
Stop and restart all clients so that they can re-register to
receive from this topic.
Problem summary
****************************************************************
* USERS AFFECTED: All users who haven't installed the ifix,    *
*                 as supplied on the WebSphere Application     *
*                 Server CD, who exploit WEMPS                 *
****************************************************************
* PROBLEM DESCRIPTION: WebSphere Application Server JMS server *
*                      fails to start after an unsubscribe     *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
On restart, after a failure, the JMS server fails to start
if the Pub/Sub functionality has been exploited and an
unsubscribe request has been issued by the client application
Problem conclusion
Subscription information in the database was corrected.
Temporary fix Comments
APAR information
APAR number PQ86845
Reported component name WAS BASE 5.0
Reported component ID 5630A3600
Reported release 00W
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2004-03-30
Closed date 2004-09-21
Last modified date 2004-09-21

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
PREREQ          

Publications Referenced

Fix information

Applicable component levels
R00H PSY    UP
R103 PSY    UP
R10A PSY    UP
R10H PSY    UP
R10I PSY    UP
R10P PSY    UP
R10S PSY    UP
R10W PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 00W
Software edition:
Reference #: PQ86845
IBM Group: Software Group
Modified date: Sep 21, 2004