OA43030: ABENDS0C4 IN IO/OPS (AKA: ESCONMGR - ESCM)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Abend0c4 occurred at IO/OPS initialization/startup in module
  IHVUOIN +X'93A' register 2 contains invalid address.
  additional symptoms: abend0c4 in IHVLFMT +1168 -
                       register 3 is invalid
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All SA z/OS V3R3 and V3R4 customers using    *
  *                 I/O operations.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: (1) Abend0c4 occurred at IOOps          *
  *                      initialization/startup in module        *
  *                      IHVUOIN.                                *
  *                      (2) IHVD999E I/O-OPS Abend 0C4,         *
  *                      CSECT=IHVLFMT, PSW=078C0000 A2D2C068.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  (1) IHVUOINM traces the XRCBs at the end of the command
  processing. However, the trace is done after IHVUOXMM is
  called which sets up an SRB that posts IHVUUSDM which in
  turn moves the data back to the user address space and
  deletes the XRCBs.
  
  (2) IHVLFMT failed to store a formatted message into the
  message table. This is caused by an improper address of
  the message table stored in the SRB parameter list. The
  SRB is scheduled when an IOOps command is issued using
  the IHVAPI interfaces.
  

Problem conclusion

• (1) The trace has been moved ahead of the call to IHVUOXMM.
  
  (2) The SRB and the IOOps task UOBY use BASETBSY as input
  for a CS instruction. Since they run on different tasks both
  can proceed but the last gets an updated BASETBSY value. This
  results in two POSTs to IHVUOINM.
  
  The address in the SRB parameter list has been corrected.
  
  In addition, the storage area of the message table is now
  released together with the appropriate XCCB and XRCB control
  blocks. This caused a storage leak every time an IHVAPI command
  was executed. add'l keywords: storage growth out of storage
  

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:

  UA70384 UA70385

Modules/Macros

• IHVSCHF  IHVSTRN  IHVUOBY  IHVUOINM IHVUORCM
  IHVUURX
  

Fix information

• Fixed component name

  SYSTEM AUTO Z/O

• Fixed component ID

  5698SA300

Applicable component levels

• R330 PSY UA70384

     UP13/08/17 P F308

• R340 PSY UA70385

     UP13/08/17 P F308

Fix is available

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