PK84580: IMS HANGS WHEN QCF IS ACTIVE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IMS goes into a wait when QCF is active. Longest waiting IMS
  save flow is same flow as PK69330, but this maintenance is on:
  DFSTMS00 -> DFSFXC30 -> DFSSYI40 -> DFSFXC40 -> XFERDEST ->
  DFSPREQ0 -> DFSQMGR0 -> DFSQFX00 -> DFSQC021 -> DFSQC020 ->
  UNK      -> QMRIB000 -> IQCCQAT0 -> CQAT8000 -> DFSIWAIT.
  
  Keyword: Hang
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of QCF3.1 that use overflow        *
  *                 protection type 3 (AREA and/or FAILSAFE      *
  *                 control cards present in IMS control         *
  *                 region customization member).                *
  ****************************************************************
  * PROBLEM DESCRIPTION: QCF  does not try to solve the          *
  *                      asynchronous posts coming out of OTMA   *
  *                      any more.                               *
  *                      Trying to solve these posts creates     *
  *                      timing window errors is WAIT/POST       *
  *                      logic in QCF and wait elements          *
  *                      fall out of the wait queue, so they     *
  *                      are never posted and cause IMs hangs.   *
  *                      On the other hand duplicate POSTs       *
  *                      are tolerated by IMS                    *
  *                      DISPATCHER and QCF post code will       *
  *                      ensure that IMS logic will determine if *
  *                      the posts are legitimate.               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Install the fix. Recycle IMS to get the new code working.
  

Problem conclusion

• Install the fix. Recycle IMS to get the new code working.
  

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:

  UK49040

Modules/Macros

• IQCCQATA IQCCQATB IQCCQATX IQCCQAT8 IQCCQAT9
  

Fix information

• Fixed component name

  IMS QUEUE CNTL

• Fixed component ID

  5697E9900

Applicable component levels

• R310 PSY UK49040

     UP09/08/06 P F908

Fix is available

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