Fixes are available
APAR status
Closed as program error.
Error description
A Message Service Client for .NET v2.0 connected to a WebSphere MQ v7 queue manager with multithreaded application when tries to create message producer causes Invalid Operation Exception. System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.Collections.Hashtable.HashtableEnumerator.MoveNext() at IBM.XMS.WMQ.WmqDestination.CrossPropertyValidate() at IBM.XMS.Client.Impl.XmsPropertyContextImpl.set_BatchProperties (Hashtable value) at IBM.XMS.Client.Impl.XmsSessionImpl.GetXmsDestination (IDestination dest) at IBM.XMS.Client.Impl.XmsSessionImpl.CreateProducer(IDestination dest) at SessionTest.Worker.Run(Object stateInfo)
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Customer using XMS .NET client multithreaded applications connecting to WebSphere MQ. Platforms affected: Windows **************************************************************** PROBLEM SUMMARY: The XMS .NET internally uses the Hash table to maintain the properties of the object. This hash table was accessed by multiple threads, the hash table is modified by one of the thread while it is being accessed by another thread this is resulted in the exception of System.InvalidOperationException: Collection was modified.
Problem conclusion
XMS .NET client product code is modified to synchronize the access to the property hash table
Temporary fix
Comments
APAR Information
APAR number
IZ95088
Reported component name
MSG SRVCS CL .N
Reported component ID
5724M2100
Reported release
200
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-02-14
Closed date
2011-02-28
Last modified date
2011-02-28
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
MSG SRVCS CL .N
Fixed component ID
5724M2100
Applicable component levels
R200 PSY
UP
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Document Information
Modified date:
28 February 2011