OA42613: IST565I STORAGE UNAVAILABLE: VTAM PRIVATE AREA SUBPOOL 071

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CPCP session from VTAM to a Windows 2000 Communications Server
  fail repetitively. The Windows 2000 Communications server is
  setting sense 08900060 for the session. This issue was corrected
  in Communications Server for windows with APAR JR16282. However
  VTAM should not run out of storage when this problem occurs.
  Storage was filled with RUMD control blocks.
  
  Messages being received were
  
  
  IST1097I  CP-CP SESSION WITH NETA.CPA
  TERMINATED
  IST129I  UNRECOVERABLE OR FORCED ERROR ON NODE CNR11111 - VARY
  INACT
  SCHED
  IST105I  CNR11111 NODE NOW
  INACTIVE
  IST871I  RESOURCE CNR11111
  DELETED
  IST1096I  CP-CP SESSIONS WITH NETA.CPA
  ACTIVATED
  IST1097I  CP-CP SESSION WITH NETA.CPA
  TERMINATED
  IST1280I  SESSION TYPE = CONLOSER  - SENSE =
  08900060
  IST314I
  END
  IST1097I  CP-CP SESSION WITH NETA.CPA
  TERMINATED
  IST1280I  SESSION TYPE = CONWINNER - SENSE =
  08900060
  IST314I
  END
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All using VTAM with CMIP (OSIMGMT=YES) or    *
  *                 NETVIEW for network management.              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Private storage buildup in GETBLK pools *
  *                      UTILPVTL and RUPEPRIV.  The storage in  *
  *                      the UTILPVTL pool contains RUMD RUs,    *
  *                      used for the Netview/VTAM interface.    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
    The problem can be summarized as follows:
  1. CS/NT or Windows 2000 Communications Server EN set up a CPCP
     session to VTAM.
  2. Netview tried to get management services data from the EN
     by sending 3 signals that are represented in VTAM storage
     by the ISTRUMDS control block with eyecatcher RUMD.
  3. The EN sent in bad data on the CPCP session that led to the
     CPCP session failing almost immediately with sense 08900060
     in message IST1280I.
  4. Timing in sending the management services data to the EN
     caused only 2 of the 3 RUMDs to be freed.
  5. The EN repeatedly sets up the CPCP session with RUMD storage
     being stranded by some the CPCP session setup/failure flows.
  
    The bad data being sent by the EN was corrected in
  Communications Server for windows with APAR JR16282. However
  VTAM should not run out of storage when this problem occurs.
  This APAR is to address the VTAM storage issue.
  
    The RUMDs could be left stranded during CPCP session
  deactivation for other reasons.  But, without a large number of
  CPCP session deactivations, the amount of storage growth would
  be hard to detect.
  

Problem conclusion

• ISTMTRCS has been changed to check the copied TP work queue
  for multiple work elements (RUMDs) when it processes a CP Status
  signal that indicates the CPCP sessions are inactive.
  

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:

  UA69973 UA69974 OA43396

Modules/Macros

• ISTMTRCS
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R1C0 PSY UA69973

     UP13/08/22 P F308 Ž

• R1D0 PSY UA69974

     UP13/08/22 P F308 Ž

Fix is available

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