PK73703: ABENDAKEX IN DFHSUEX. EXIT XRSINDI RUNNING UNDER THE RO TCB DURING A FILE OPEN. THE FILE HAS A JOURNAL DEFINED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A VSAM file with a Journal defined fails when being opened.
  During PLT processing, an application issues a EXEC CICS READ
  FILE request. The file is closed and DFHFCN is called to open
  it. DFHLGST is called to connect the Journal to its logstream
  and invokes the stream class of the log manager to issue a
  IXGCONN.
  This is a long-term operation, so we switch from the QR TCB to
  the RO. While still running under the RO TCB, the GLUE (CPSM
  exit EYU9NLID) defined to run in XRSINDI is invoked. DFHSUEX is
  called to handle the exit and abends with an abend AKEX at
  offset x'00000980' performing an INQ_SUBSPACE_ENVIRONMENT
  request. The failing instruction is a load of Register8 from
  CSASMITK as part of the macro DFHCSAD TYPE=LOCATE,REG=R8.
  DFHCSAD loads L8 with the address of the CSA from AFCSA (in
  DFHAFCB). The task is still running under the RO TCB. This TCB
  has not primed AFCSA with the address of the CSA. Consequently,
  L8 is loaded with zeroes causing DFHSUEX to abend0C4.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend akex in DFHSUEX for a call to     *
  *                      GLUE XRSINDI from DFHLGST.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A call to XRSINDI from DFHLGST for logstream connect processing
  is made under the RO TCB. If the GLUE has switched subspaces,
  the codepath in DFHSUEX upon return from the GLUE will attempt
  to return to the original subspace. This requires addressability
  to the CSA but the RO TCB does not have an AFCB primed with the
  CSA address. This results in an abend AKEX.
  Keywords: abendakex CPSM CM CICSPlex PK56992 EYU9NLID 0C4 S0C4
            abends0c4 abend0c4
  

Problem conclusion

• DFHLGST has been changed to return to the QR TCB before invoking
  XRSINDI for logstream connect processing.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PK66431

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

  UK41469

Modules/Macros

•    DESLGST  DFHLGST
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK41469

     UP08/11/15 P F811

Fix is available

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