PQ62651: REPEATED MESSAGE CFN1280W MAY BE WRITTEN TO THE SYSTEM CONSOLE. POSSIBLE OVERLAY OF UP TO 3 BYTES IN THE HIOP POOL OCCURS.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• =========================
  PROBLEM SYMPTOMS:
  =========================
  MESSAGE CFN1280W, INCORRECT SCREEN IMAGES, OR IMS CTL REGION
  ABENDU0513 DUE TO CIOP OVERLAY.
  .
  EXCESSIVE CPU UTILIZATION IN CFNCOMP1, CFNLUBMG modules
  .
  =========================
  .
  =========================
  USERS AFFECTED:
  =========================
  ALL IMS NETWORK COMPRESSION FACILITY USERS.
  =========================
  RECOMMENDATION:
  =========================
  INSTALL CORRECTIVE SERVICE FOR APAR/PTF.
  =========================
  PROBLEM RESOLUTION:
  =========================
  REDUCED SIZE OF MIDDLE-IN-CHAIN DATA STREAM SIZE BY
  ELIMINATING THE NEED FOR A SET BUFFER ADDRESS (SBA) IN DATA
  STREAMS WHERE THE CURSOR IS ALREADY AT THE PROPER BUFFER
  ADDRESS.  THIS PROBLEM ONLY OCCURS WHEN THE OUTBUF SIZE IS
  TOO SMALL TO HOLD THE ENTIRE DATA STREAM.
  .
  ADDED AN ANCHOR FOR NETWORK COMPRESSION FACILITY CONTROL
  BLOCKS IN THE CLB TO ELIMINATE THE NEED TO SEARCH FOR
  CONTROL BLOCKS ON EVERY SEND.  ALSO, INPROVED DATA STREAM
  FIELD SORTING TECHNIQUES TO REDUCE CPU UTILIZATION IN
  CFNCOMP1.
  .
  =========================
  MODULES/MACROS:
  =========================
  MODULES: CFNCOMP1 CFNCOMP2
  CFNSEND5 CFNSEND6 CFNSEND7 CFNSEND8
  .
  data stream end with the same cursor position.
  Modules:
  CFNCOMP1 CFNCOMP2
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: ALL IMS NETWORK COMPRESSION FACILITY USERS   *
  *                 WHO HAVE SMALLER (LESS THAN 4K) OUTBUF       *
  *                 SIZES.                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: REPEATED MESSAGE CFN1280W MAY BE        *
  *                      WRITTEN TO THE SYSTEM CONSOLE.          *
  *                      POSSIBLE OVERLAY OF UP TO 3 BYTES       *
  *                      IN THE HIOP POOL.                       *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  REPEATED MESSAGE CFN1280W MAY BE WRITTEN TO THE SYSTEM CONSOLE.
  POSSIBLE OVERLAY OF UP TO 3 BYTES IN THE HIOP POOL.
  

Problem conclusion

• CHANGES WERE MADE TO ELIMINATE THE NEED FOR A SET BUFFER
  ADDRESS (SBA) IN EACH RPL OF A DATA STREAM. THE ORDER OF
  DATA IN THE DATA STREAM WILL ALSO BE CHANGED FOR MIDDLE
  AND LAST IN CHAIN RPLS TO TAKE ADVANTAGE OF THE CURRENT
  BUFFER POSITION, AS WELL AS HAVING EACH RPL IN THE DATA
  STREAM END WITH THE SAME CURSOR POSITION.
  

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:

  UQ74659

Modules/Macros

•    CFNCOMP1 CFNCOMP2 CFNSEND5 CFNSEND6 CFNSEND7
  CFNSEND8
  

Fix information

• Fixed component name

  IMS NETWORK COM

• Fixed component ID

  5655E4100

Applicable component levels

• RA10 PSY UQ74659

     UP03/03/05 P F303

Fix is available

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