PI77062: ENHANCEMENT TO IMPROVE TRANSACTION THROUGH-PUT WHEN MULTIPLE DLI CALLS ACCESS THE SAME NON-AUDITED DBD/SEG

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When the IMS STAP policy is configured so cause DLI calls to be
  rejected due to the DBD/SEG pair being EXCLUDED, or not
  INCLUDED in
  the candidate database list, every DLI call must be routed
  through the
  filtering process. This change allows the IMS ONLINE portion of
  the
  IMS STAP to use STAGE 1 filtering to reduce the number of calls
  to the
  IMS CTX ITASK and filter, which can improve IMS performance and
  transaction through-put.
  
  If ALL rules in the policy contain DBD/SEGs which have ALL DLI
  call
  types referenced, when a DLI call is rejected due to the
  DBD/SEG pair,
  a flag is set that will allow the STAGE1 filter to reject the
  DLI call
  for subsequent DLI calls if: the USERID, PSB, DBD and SEGMENT
  of the
  rejected DLI call are the same as the current DLI call.
  
  If the policy rules contain DBD/SEGs which do not have all DLI
  call
  types referenced, the STAGE1 filtering may still occur, but
  only for
  DLI calls with which the USERID, PSB, DBD, SEGMENT AND DLI call
  of the
  rejected DLI call are the same as the current DLI call.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IBM Security Guardium S-TAP for     *
  *                 IMS on z/OS                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: When the IMS STAP policy is configured  *
  *                      to cause DLI calls to be rejected due   *
  *                      to the DBD/SEG pair being EXCLUDED,     *
  *                      or not INCLUDED in the candidate        *
  *                      database list, every DLI call must be   *
  *                      routed through the filtering process.   *
  *                      This change allows the IMS ONLINE       *
  *                      portion of the IMS STAP to use STAGE 1  *
  *                      filtering to reduce the number of calls *
  *                      to the IMS CTX ITASK and filter, which  *
  *                      can improve IMS performance and         *
  *                      transaction through-put.                *
  *                                                              *
  *                      If ALL rules in the policy contain      *
  *                      DBD/SEGs which have ALL DLI call types  *
  *                      referenced, when a DLI call is rejected *
  *                      due to the DBD/SEG pair, a flag is set  *
  *                      that will allow the STAGE1 filter to    *
  *                      reject the DLI call for subsequent DLI  *
  *                      calls if: the USERID, PSB, DBD and      *
  *                      SEGMENT of the rejected DLI call are    *
  *                      the same as the current DLI call.       *
  *                                                              *
  *                      If the policy rules contain DBD/SEGs    *
  *                      which do not have all DLI call types    *
  *                      referenced, the STAGE1 filtering may    *
  *                      still occur, but only for DLI calls     *
  *                      with which the USERID, PSB, DBD,        *
  *                      SEGMENT AND DLI call of the rejected    *
  *                      DLI call are the same as the current    *
  *                      DLI call.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Apply the supplied PTF to resolve this issue.
  

Problem conclusion

• N/A
  

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:

  UI45878

Modules/Macros

•    AUICPY4B AUICPY4C AUICPY4D AUICPY4E AUICPY4F
  AUIDLA0B AUIDLA0C AUIDLA0D AUIDLA0E AUIDLA0F AUILOG0B AUILOG0C
  AUILOG0D AUILOG0E AUILOG0F AUILOO0B AUILOO0Z AUIMCOM
  

Fix information

• Fixed component name

  SEC GUAR STAP I

• Fixed component ID

  5655STM00

Applicable component levels

• RA00 PSY UI45878

     UP17/04/01 P F703

Fix is available

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