A fix is available
APAR status
Closed as program error.
Error description
The following errors were reported in a CICS joblog: CSQY291E CSQWDSDM SDUMPX FAILED, RC=00000408,ssid, ABN=878-00000010 DFHMQ0480 E MQCC=2 MQRC=2195, QRPL at X'<address1>' FRB at X'<address2>'. DFHDU0201 ABOUT TO TAKE SDUMP. DUMPCODE: MQ0480 IEA794I SVC DUMP HAS CAPTURED: DUMP TITLE=CICS DUMP: SYSTEM=cicsid CODE=MQ0480 ID=1/nnnn DFHDU0217 LQ01CINO SDUMPX request completed with a return code of X'04'. A complete or partial dump has been taken. The application logged errors of: - MQGET MQ RC: 2 MQ Reason: 2195 MQRC_UNEXPECTED_ERROR - MQGET MQ RC: 2 MQ Reason: 2119 MQRC_NOT_CONVERTED - MQDLTMP MQ RC: 2 MQ Reason: 2471 MQRC_PROPERTY_NOT_AVAILABLE The ABEND878 was for private storage in the CICS job in Subpool 131 Key 8 (SP131 K8 KEY8). A systrace entry for the failing STORAGE OBTAIN had its PSW in MQ module CSQMALCH. The storage had an AHSG eyecatcher in EBCDIC and a ZRFP eyecatcher in ASCII, which is related to MQ message properties. A GTF trace of a prior instance of this symptom showed that the storage was obtained during MQGET processing to create a message handle for the message and its properties being retrieved. This would be driven based on the MQGMO options (i.e. MQGMO_PROPERTIES_AS_Q_DEF or MQGMO_PROPERTIES_IN_HANDLE) and the PropertyControl (PROPCTL) queue attribute for the queue the MQGET is being performed against. Further details of this processing is described in the Product Documentation for MsgHandle (MQHMSG) at: https://www.ibm.com/support/knowledgecenter/SSFKSJ_9.0.0/com.ibm .mq.ref.dev.doc/q096760_.htm In the previous instance of this symptom, it was found that the MsgHandle needed to be deleted using MQDLTMH or CSQCDTMH. In the case associated with this APAR, MQDLTMH was present but sometimes failed with reason 2471 MQRC_PROPERTY_NOT_AVAILABLE. Calls intended to free storage for message properties were failing with rrcE_BAD_PARAMETER, thus allowing the storage to be leaked. The failing calls to free message property storage occur when the queue manager has allocated the storage due to the original block (allocated by the adapter) being too small to contain the properties in the message being returned by MQGET. Additional Symptom(s) Search Keyword(s): ABEND878 ABENDS878 878 S878 S0878 RC10 RC00000010 LSQA OSCORE 5655Y0400 5722DFJ00 CICS TS Transaction Server
Local fix
Recycle the job / CICS region that ran out of storage.
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 0 Modification 0 and Release 1 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: MQ Message Property API calls return * * MQCC_OK / MQRC_NONE following an * * unsuccessful attempt to free message * * property storage. * * * * Storage shortage in the address space * * of MQ applications that use message * * properties. * * Symptoms can include * * - abend S878 * * - MQI calls failing * * MQRC_UNEXPECTED_ERROR (2195) * * MQRC_ADAPTER_STORAGE_SHORTAGE(2127) * * MQRC_NOT_CONVERTED (2119) * * * * * **************************************************************** While copying message properties to the buffer contained in a message handle provided by an application, the queue manager detected that the buffer was too small and allocated a new buffer - this buffer is allocated in the application address space. When the buffer is no longer required (for example, when the message handle is deleted), it is added to a chain for later processing. This chain is processed at the start of the next MQ Message Properties API call (e.g. MQSETMP, MQDLTMP) and an attempt to free the storage is made, however an error in CSQAFRMN causes this to fail. This causes the storage to be leaked, and the API call that was processing the chain to return MQCC_OK MQRC_NONE before the underlying function to process the call is executed.
Problem conclusion
CSQAFRMN is changed to correctly free message property storage allocated by the queue manager. MQMSGPROP/K
Temporary fix
Comments
APAR Information
APAR number
PH04627
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-10-29
Closed date
2018-11-06
Last modified date
2019-01-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI59512 UI59513
Modules/Macros
CSQAFRMN
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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Document Information
Modified date:
02 January 2019