PH59034: CSQ0607E WHEN USING MQPUT1 WITH CONFIDENTIALITY POLICIES. 24/02/08 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Queue manager reported CSQ0607E, which accompanied with
  CSQ0215E,CSQ0214E and CSQ0607E.
  The dumps show subpool 2 key 7 of AMS address space and subpool
  229 key 7 of MSTR address space consumed huge ABOVE storage.
  The LEDATA heap exception report shows that the majority of the
  storage is allocated from heappool 2 and consists of a very
  large number of small (x38) byte allocations.
  The memory leak can occur when using MQPUT1 with
  confidentiality policies.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 2 Modification 0 and                 *
  *                 Release 3 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Storage leak in the xxxxAMSM address    *
  *                      space, leading to symptoms that can     *
  *                      include:                                *
  *                      - MQI calls failing MQRC_SECURITY_ERROR *
  *                        2063                                  *
  *                      - CSQ0215E reporting Message Protection *
  *                        failed                                *
  *                      - increased CPU usage                   *
  *                      - Abend S878                            *
  *                      - Performance degradation               *
  ****************************************************************
  When protecting messages put using MQPUT1 to queues protected
  by a Confidentiality policy, an error can result in an area of
  storage being allocated during the message protection processing
  but not freed.
  Over time,the accumulation of leaked storage can result in
  a degradation in performance, and eventual storage exhaustion.
  This Short on Storage SOS condition leads to MQI calls failing
  and abends reporting the storage shortage being captured.
  

Problem conclusion

• CSQ0DLCF is changed to correctly free the leaked storage when
  it is no longer required.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UI95605 UI95606

Modules/Macros

• CSQ0DLCF
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R200 PSY UI95606

     UP24/02/14 P F402 ­

• R300 PSY UI95605

     UP24/02/14 P F402 ­

Fix is available

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