PK69330: IMS V910 GETS INTO A HANG WHEN QCF IS ACTIVE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IMS V910 goes into a wait when QCF is active. Longest waiting
  IMS save flow is:
  DFSTMS00 -> DFSFXC30 -> DFSSYI40 -> DFSFXC40 -> XFERDEST ->
  DFSPREQ0 -> DFSQMGR0 -> DFSQFX00 -> DFSQC021 -> DFSQC020 ->
  UNK      -> QMRIB000 -> IQCCQAT0 -> CQAT8000 -> DFSIWAIT.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of QCF 3.1                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: IMS V910 or above gets into a hang      *
  *                      when QCF is active in control region    *
  *                      and the queues are building up.         *
  *                      This happens if several sources are     *
  *                      inserting messages and get close to     *
  *                      area actions.                           *
  *                       A bug in sorting queue of waiters on   *
  *                      action table  caused the second in      *
  *                      queue not to be posted and IMS hangs.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  IMS hangs when there are several sources requestig area
  actions-sort queue for exclusive waiters on action table is in
  error - and waiters do not get posted.
  

Problem conclusion

• Sort of waters queue has been fixed. All waiters are posted.
  

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:

  UK38465

Modules/Macros

• IQCCQATA IQCCQATX IQCCQAT8 IQCCQAT9 IQCCQTTA
  IQCCQTTX IQCCQTT8 IQCCQTT9 IQCQMRGA IQCQMRGX IQCQMRG8 IQCQMRG9
  

Fix information

• Fixed component name

  IMS QUEUE CNTL

• Fixed component ID

  5697E9900

Applicable component levels

• R310 PSY UK38465

     UP08/07/29 P F807

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.