PM21054: ABEND0C4 RC38 OR RC11 FROM DSN3AUGC, DSNLCDP2, DSNLQACT OR DSNVMON. ABEND04E RC00D35011 FROM DSNLZS00 ALSO POSSIBLE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DB2DDF DDFL09 DB2DRDA defect pm21054 dpm21054
  ABEND0C4 RC38 or RC11 from DSN3AUGC, DSNLCDP2, DSNLQACT or
  DSNVMON. ABEND04E RC00D35011 from DSNLZS00. DB2 eventually
  came down with RC00D94001.
  Other abends are also possible as there are 2 byte or 6 byte
  shift in the shared private storage above the bar (SCLASS 21 )
  .
  The pool overlaid were typically SSSC GAC VL POOL
  DDIS SHR MEM POOL but other pool is also possible.
  ********************************************************
  Additional symptoms and keywords:
   ABEND04E AB04E S004E 04E   DB2OVRLAY/K smcoverlay
    04E-00D35011 00D35011 RC00D35011 DSNLZS00:02D0
     DSNLZS00 02D0 VRADC02D0 ABNDID02D0 ABID02D0
    04E-00E20001 00E20001 RC00E20001 DSNXEFDA.DSNSVSVB+01FC
     DSNXEFDA DSNSVSVB 01FC
    04E-00E20029 00E20029 RC00E20029 DSNLXSSR.DSNSVSVB+094E
    04E-00E20032 00E20032 RC00E20032 DSNSVSVB DSNSVSVB+156E 156E
     DSNLXSSR DSNSVSVB 094E
   ABEND0C4 AB0C4 S00C4 0C4
    0C4-00000004 00000004 RC00000004 DSNLXXSS DSNLXXSS+1D20 1D20
    0C4-00000011 00000011 RC00000011 DSN3AUGC DSN3AUGC+10AA 10AA
    0C4-00000038 00000038 RC00000038 DSNLCDP2 DSNLCDP2+08D8 08D8
                                     DSNLISKM DSNLISKM+04FE 04FE
                                     DSNLQACT DSNLQACT+1798 1798
    0C4-0000003B 0000003B RC0000003B DSNLCDP2 DSNLCDP2+07CE 07CE
                                     DSNVMON  DSNVMON+032C  032C
   SMCOVERLAY  SCLASS21OVERLAY OVERLAID
     2 two 6 six byte shift
  .
  DB2OVRLAY/K
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Distributed Data Facility (DDF) users.   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Unpredictable results may occur due to  *
  *                      an overlay, including the following     *
  *                      abend symptoms:                         *
  *                      04E-00D35011,LOC=DSNLZLLM.DSNLZS00:02D0 *
  *                      04E-00E20001,LOC=DSNXEFDA.DSNSVSVB+01FC *
  *                      04E-00E20029,LOC=DSNLXSSR.DSNSVSVB+094E *
  *                      04E-00E20032,LOC=DSNSLD4.DSNSVSVB+156E  *
  *                      0C4-00000004,LOC=DSNLXLLM.DSNLXXSS+1D20 *
  *                      0C4-00000011,LOC=DSN3AMGP.DSN3AUGC+10AA *
  *                      0C4-00000038,LOC=DSNLILLM.DSNLCDP2+08D8 *
  *                      0C4-00000038,LOC=DSNLILLM.DSNLISKM+04FE *
  *                      0C4-00000038,LOC=DSNLILLM.DSNLQACT+1798 *
  *                      0C4-0000003B,LOC=DSNLILLM.DSNLCDP2+07CE *
  *                      0C4-0000003B,LOC=DSNVGEPL.DSNVMON+032C  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A remote client flows special registers to a DB2 server to
  propagate the application environment before processing the
  SQL in a transaction. A client can only send 32 statements
  chained together. If the client sends more than 32 statements
  in a chain, the DB2 server detects a DRDA exception but it also
  incorrectly processes each statement without initializing
  its internal loop counter thereby leading to a storage overlay.
  The storage overlay may lead to unpredictable results including
  one or more of the reported abends.
  

Problem conclusion

• DB2 server processing has been changed to not process the
  statements after detecting the DRDA exception error.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UK60827 UK60828

Modules/Macros

• DSNLCDP2 DSNLCRTD DSNLIRTR
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• R810 PSY UK60827

     UP10/10/13 P F010

• R910 PSY UK60828

     UP10/10/13 P F010

Fix is available

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