APAR status
Closed as program error.
Error description
A discrepancy is observed in the handling of null (0x00) bytes in the MQMD format field when AMS interception is enabled. If an AMS policy is not defined, and the message is not protected whilst on the queue, the null bytes in the MQMD format field are converted to blank characters (for example, 0x20 in ASCII codepages) before being returned to the application during MQGET. If an AMS policy is defined, null byes are not converted, and remain present in the MQMD format field returned by MQGET.
Local fix
C sender application needs to be modified to set the md.Format to "MQFMT_NONE".
Problem summary
**************************************************************** USERS AFFECTED: All uses of native MQ AMS interceptors, which covers users running intercepted native applications and users who have configured MCA interception on SVRCONN channels. All qualities of AMS protection are affected. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: AMS protection is intended to be invisible to the target application when the message is consumed. However, when AMS protection is applied, the queue manager is unable to blank-pad the MQMD format field of the message with space characters, as is the expected behaviour. In this case, the blank padding should be applied by the AMS interceptor when the message is unprotected during MQGET processing, but this logic was not present in the native AMS interceptor.
Problem conclusion
The native AMS interceptor logic has been updated to blank-pad the MQMD format field when the message is unprotected. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.0 LTS 9.0.0.3 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
IT21338
Reported component name
IBM MQ AMS V9.0
Reported component ID
5724H7263
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-07-07
Closed date
2017-08-01
Last modified date
2017-08-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI85287
Fix information
Fixed component name
IBM MQ AMS V9.0
Fixed component ID
5724H7263
Applicable component levels
R900 PSY
UP
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Document Information
Modified date:
01 August 2017