Fixes are available
APAR status
Closed as program error.
Error description
The following thread is seen as hung in the Servant Region: at java/lang/Object.wait(Native 4XESTACKTRACE at java/lang/Object.wait(Object.java: 4XESTACKTRACE at com/ibm/mq/connector/inbound/ServerSessionImpl. close(ServerSessionImpl.java: 4XESTACKTRACE at com/ibm/mq/connector/inbound/ServerSessionPoolImpl. closeInternal(ServerSessionPoolImpl.java: 4XESTACKTRACE at com/ibm/mq/connector/inbound/ServerSessionPoolImpl. close(ServerSessionPoolImpl.java: 4XESTACKTRACE at com/ibm/mq/connector/inbound/MessageEndpointDeployment. stopDeliveryASF(MessageEndpointDeployment.java: 4XESTACKTRACE at com/ibm/mq/connector/inbound/MessageEndpointDeployment. stop(MessageEndpointDeployment.java: 4XESTACKTRACE at com/ibm/mq/connector/ResourceAdapterImpl. endpointDeactivation(ResourceAdapterImpl.java: 4XESTACKTRACE at com/ibm/ejs/j2c/ActivationSpecWrapperImpl. deactivateUnderRAClassLoaderContext(ActivationSpecWrapperImpl. java: 4XESTACKTRACE at com/ibm/ejs/j2c/ActivationSpecWrapperImpl. deactivateEndPoint(ActivationSpecWrapperImpl.java: 4XESTACKTRACE at com/ibm/ejs/j2c/RAWrapperImpl. deactivateEndpoint(RAWrapperImpl.java: 4XESTACKTRACE at com/ibm/ejs/j2c/RALifeCycleManagerImpl. deactivateEndPoint(RALifeCycleManagerImpl.java: 4XESTACKTRACE at com/ibm/ejs/container/MessageEndpointFactoryImpl. deactivateEndpoint(MessageEndpointFactoryImpl.java: 4XESTACKTRACE at com/ibm/ejs/container/EJSContainer. uninstallBean(EJSContainer.java: and the following exception is seen in the log: BBOO0220E: [:] CWWMQ0045E: An internal error has occurred. An error, with message JMSCC0033: A synchronous method call is not permitted when a session is being used asynchronously: 'deliver'., caused endpoint <endpoint_name> to be stopped. The Servant Region then abends due to the hung thread.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: This issue affects users of the WebSphere MQ Resource Adapter V7.1 and V7.5 that are using Activation Specifications. Platforms affected: All Distributed (iSeries, all Unix and Windows) +Java +Java zOS **************************************************************** PROBLEM SUMMARY: A hung thread was detected that was attempting to deactivate an message endpoint when the application was either stopped or uninstalled. The thread was waiting for an active ServerSession that complete before allowing the endpoint to deactivate. A problem in the assignment of message references to a ServerSession in the pool caused the following exception to occur: " JMSCC0033: A synchronous method call is not permitted when a session is being used asynchronously: 'deliver'., caused endpoint <endpoint_name> to be stopped. " The above exception then caused the ServerSession to remain in an active state even though the ServerSession would not run.
Problem conclusion
This APAR solves the problem by ensuring that the ServerSession is not incorrectly assigned message references when it is returned to the ServerSession Pool. This will then allow any deactivate endpoint thread to complete as no ServerSession will be seen as active. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.1 Platform Fix Pack 7.1.0.3 -------- -------------------- Windows 7.1.0.3 AIX 7.1.0.3 HP-UX (Itanium) 7.1.0.3 Solaris (SPARC) 7.1.0.3 Solaris (x86-64) 7.1.0.3 iSeries 7.1.0.3 Linux (x86) 7.1.0.3 Linux (x86-64) 7.1.0.3 Linux (zSeries) 7.1.0.3 Linux (Power) 7.1.0.3 zOS 7.1.0.3 Platform v7.5 -------- -------------------- Multiplatforms 7.5.0.1 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IC88666
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-11-28
Closed date
2012-12-19
Last modified date
2012-12-19
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R710 PSY
UP
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Document Information
Modified date:
31 March 2023