PM74678: ABEND4C5 REASON CODE 74BE2508 WITH LSQA SUBPOOL 205 EXHAUSTED

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible in next release.

Error description

• LSQA subpool 205 fills up with XFCRHTE entries that are not
  being freed.  ABEND4C5 RC 74BE2508 results.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communication Server    *
  *                 for z/OS Version 1 Release 13                *
  *                 IP: Distributed DVIPA                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: LSQA subpool 205 fills up with unfreed  *
  *                      XFCRHTE entries resulting in ABEND4C5   *
  *                      RC 74BE2508.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During connection establishment from a distributed DVIPA on a
  target stack a SYN sends an XCF message to create an XFCRHTE
  routing control block on the sysplex distributor.
  Meanwhile before the XCF message arrives, the SYNACK arrives
  at the distributor. A temporary XFCRHTE is created to queue
  the SYNACK at the distributor. When the XCF message does
  arrive a new XFCRHTE is created and the SYNACK is forwarded to
  the target, but the temporary XFCRHTE is not freed.
  This is a timing problem that can occur whenever a SYNACK
  for a distributed connection arrives at the distributor
  before the XCF message that creates the primary XFCRHTE.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

• Distributed DVIPA processing was modified to free the XFCRHTE
  control block.
  

APAR Information

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

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

  UK83314 PM77356

Modules/Macros

• EZBXFACI EZBXFHSH EZBXFUTL EZBX6ACI EZBX6HSH
  EZBX6UTL
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1D0 PSY UK83314

     UP12/12/22 P F212

Fix is available

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