OA42289: CSA ECSA STORAGE GROWTH IN THE RUPECOMM SPANC POOL WITH CPCB X'5F' CONTROL BLOCKS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• INOP processing is stranding CPCB control blocks in storage,
  X'5F' control block ID.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 12 and 13      *
  *                 SNA DLUS function.                           *
  ****************************************************************
  * PROBLEM DESCRIPTION:   ECSA storage growth in the RUPECOMM   *
  *                      SPANC pool with CPCBs (control block    *
  *                      ID x'5F').  This is the results of an   *
  *                      INOP on the DLUR/DLUS pipe stranding a  *
  *                      CPCB.                                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem can be summarized as follows:
  1. An INOP occurred on the route used by the DLUR/DLUS pipe.
  2. In the DLUS host, ISTDECQ4 was called to process the outage
     and allocated a CPCB to perform the INOP processing.
  3. As part of this processing ISTDECF7 issued message IST1416I
     ID = DLUR_CP_name FAILED -- RECOVERY IN PROGRESS.  This could
     be seen on the console log as IST619I, if MSGLEVEL=BASE was
     used.
  4. Then ISTDECQ4 issued message IST1414I SESSION OUTAGE -
     REDIAL NOT ATTEMPTED FOR DLUR_PU_name
  5. When the INOP processing was complete, the CPCB was not
     freed if it was allocated for an outage on the DLUR/DLUS
     pipe.
  This is an example of the CPCB that was not freed.  Note that
  the CPCBOPC at offset x'1C' is x'00030004':
  +000 5F0A4000 00000000 00000000 00000000 *¬. .............
  +010 00000000 00000000 00000000 00030004 *................
  +020 00000000 00000000 00000000 00000000 *................
  +030 00000000 00000000 00000000 00000000 *................
  +040 00000000 00000000 00000000 00000000 *................
  

Problem conclusion

• ISTDECQ4 has been changed to issue a CPRESP macro to post back
  and free the CPCB allocated to process the INOP on the DLUR/DLUS
  pipe.
  

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:

  UA69563 UA69564 OA42689

Modules/Macros

• ISTDECQ4
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R1C0 PSY UA69563

     UP13/08/06 P F308 Ž

• R1D0 PSY UA69564

     UP13/08/06 P F308 Ž

Fix is available

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