OA64822: ABEND=S01C5,REASON=000A0013 AT IXGF1WOW + X'CF36' WHEN PCNTL_AOCTL_INUSE IS SET TO OFF WHEN WE EXPECT IT TO BE ON.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND1C5 REASON=000A0013 is encountered during offload
  processing after turning on LS_ALLOCAHEAD in a logstream with
  active connectors. The abend is due to a mismatch setting of two
  bits.
  
  During the transition of the LS_ALLOCAHEAD logstream attribute
  from pending to no longer pending there are two paths that can
  cause bits PCNTL_AOctl_inuse and Lcb_AdvCurds_ProActive to not
  be in sync, leaving Lcb_AdvCurds_ProActive On and
  PCNTL_AOctl_inuse off:
  
  1. If the logger structure becomes full during dataset switch
  processing.
  2. If logger structure duplexing is stopped and restarted
  without a rebuild in between
  
  VERIFICATION STEPS:
  Confirm PCNTL_AOctl_inuse is off while Lcb_AdvCurds_ProActive is
  on and one of the conditions described in the Error
  Description has occurred.
  
  For data set switch processing look for CTRACE entry AOCTL
  CREATE FAILED.
  

Local fix

• RECOVERY ACTION:
  Disconnect and reconnect the logstream.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of HBB77D0 and above releases                          *
  * using System Logger Services and the                         *
  * LS_ALLOCAHEAD log stream attribute.                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABEND1C5 RSN000A0013 occurs during                           *
  * offload processing while the                                 *
  * activation of the LS_ALLOCAHEAD                              *
  * log stream attribute is pending                              *
  * and one of two of the following                              *
  * events has occurred:                                         *
  * 1) During data set switch processing,                        *
  *    a call to IXLLIST WRITE fails due                         *
  *    to the structure being full                               *
  * 2) Structure duplexing rebuild was                           *
  *    previously performed                                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  ABEND1C5 RSN000A0013 indicates an inconsistency with
  the LS_ALLOCAHEAD attribute between 2 internal control
  blocks.  This APAR addresses two specific situations
  that will result in the ABEND appearing:
  
  1) ABEND issued during offload processing while
     the activation of the LS_ALLOCAHEAD log stream
     attribute is pending and during data set switch
     processing, a call to IXLLIST WRITE fails with
     RC0C, RSN0C1C0C17 (structure is full).
  
  2) ABEND issued during offload processing while
     the activation of the LS_ALLOCAHEAD log stream
     attribute is pending and a structure duplexing
     rebuild was previously performed.
     (example: SETXCF START,REBUILD,DUPLEX,STRNAME=xxx)
  

Problem conclusion

• System Logger is changed to ensure the 2 internal
  control blocks representing the LS_ALLOCAHEAD
  attribute are in a consistent state after:
  
  1) The data set switch processing recovers from
     the IXLLIST WRITE failure.
  
  2) The structure duplexing rebuild is performed.
  

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:

  UJ93485 UJ93486

Modules/Macros

• IXGC4RBE IXGI3DSE IXGV1FMT
  

Fix information

• Fixed component name

  SYSTEM LOGGER

• Fixed component ID

  5752SCLOG

Applicable component levels

• R7D0 PSY UJ93486

     UP23/08/23 P F308 ¢

• R7E0 PSY UJ93485

     UP23/08/23 P F308 ¢

Fix is available

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