A fix is available
APAR status
Closed as program error.
Error description
ABEND S0C4 0C4 ABENDS0C4 ABN=0C4-00000010,U=XXXXXX ,C=W9700.800.BUFF-CSQP3GET,M=CSQGFRCV,LOC=CSQPLPLM. CSQP3GET+00000EB2 . ABN=0C4-00000004,U=MMMMMM ,C=W9700.800.BUFF-CSQP3GET,M=CSQGFRCV,LOC=CSQPLPLM. CSQP3GET+00000EB6 . Subfunction: BUFF CSQP3GETSTEAL_PAGE . The problem occurs when using buffer pools above the bar (i.e. 64 bit) and the readahead function is turned on and a buffer needs to be 'stolen' from a buffer pool. . Additional keywords: ABEND0C4 ABENDS0C4 S0C4 S00C4 0C4 MQABBP/K
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: CSQP3GET generates 0C4 abend or loops * * using high CPU when MSTR address space * * is configured to use read ahead, buffer * * pools above the bar and messages using * * old MQ V6 format. * * Occasionally, queue manager terminates * * with reason 00D95001. * **************************************************************** * RECOMMENDATION: * **************************************************************** CSQP3GET calls macro ?csqirahr to request read ahead services. The read ahead function PAGEOUT does not support 64-bit buffer pools and it truncates the high part of the buffer address resulting in 0C4 abends or loops.
Problem conclusion
Macro ?csqirahr has been changed to support 64-bit message buffer addresses. 000Y CSQIMGEF CSQIMGE3 CSQIMGE4 CSQIMGE5 CSQIMGE9 CSQISCN3 CSQP2GET CSQP3GET
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI60014
Reported component name
WMQ Z/OS 8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-03-31
Closed date
2016-05-06
Last modified date
2016-06-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI37605
Modules/Macros
CSQIMGEF CSQIMGE3 CSQIMGE4 CSQIMGE5 CSQIMGE9 CSQISCN3 CSQP2GET CSQP3GET
Fix information
Fixed component name
WMQ Z/OS 8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI37605
UP16/05/26 P F605 ¢
Fix is available
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Document Information
Modified date:
02 June 2016