APAR status
Closed as program error.
Error description
Consuming an empty message in asynchronous mode using an unmanaged .NET XMS application encounters an XMSException such as below in the application log. IBM.XMS.XMSException: CWSMQ0282E: A null value has been used for argument BUFFER = <> NULL within method ImportMQMDMesageBuffer(WmqSession, WmqDestination, MQMD,byte[],int,int). The preceding method detected an invalid null argument. If necessary, recode the application to avoid the error condition. at IBM.XMS.Client.WMQ.WmqReceiveMarshal.ImportMQMDMesageBuffer(MQMe ssageDescriptor mqmd, Byte[] buffer, Int32 dataStart, Int32 dataEnd) at IBM.XMS.Client.WMQ.WmqAsyncConsumerShadow.Consumer(Phconn hconn, MQMessageDescriptor mqmd, MQGetMessageOptions mqgmo, Byte[] pBuffer, MQCBC mqcbc) at IBM.WMQ.Nmqi.UnmanagedNmqiMQ.NmqiConsumerMethodUM(Int32 hconn, IntPtr structMqmd, IntPtr structMqgmo, IntPtr buffer, IntPtr structMqcbc) After this XMSException the Windows Service, which runs the IBM Client application, crashes.
Local fix
NA
Problem summary
**************************************************************** USERS AFFECTED: All users using an IBM MQ XMS .Net application in unmanaged mode to get the message asynchronously. Platforms affected: Windows **************************************************************** PROBLEM DESCRIPTION: When an empty message is put by any application and got asynchronously by an XMS application in unmanaged mode, a certain buffer was not initialized properly before using, causing the XMS application to throw the exception.
Problem conclusion
The code has been modified to initialize the buffer when empty string is being get by the XMS application. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.12 v9.0 LTS 9.0.0.7 v9.1 CD 9.1.3 v9.1 LTS 9.1.0.3 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
IT28062
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-02-11
Closed date
2019-03-28
Last modified date
2019-03-28
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
IBM MQ BASE MP
Fixed component ID
5724H7251
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
28 March 2019