PM80076: CURRENTCONNECTIONS IN NETSTAT ALL FOR FRCA LISTENER INCORRECT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The CurrentConnections value reported for the listener socket
  for a web server using FRCA caching may be incorrect.
  Connections that have been served totally from the cache that
  are closed when the persistent connection timer (the
  PersistTimeout value in the HTTP configuration) expires are not
  being removed from the count.  If clients are letting this time
  elapse before closing the connection, the reported value will
  always be growing.
  
  This will affect the value in the NETSTAT ALL report for this
  listener, the SMF server statistics (SMF119SP_TCNumConns), and
  SNMP queries for the port.
  

Local fix

• Setting PersistTimeout to 0 will disable this feature, but may
  have performance impacts.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 13 IP:         *
  *                 FRCA                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: FRCA enabled listener count of current  *
  *                      connections is not decremented when the *
  *                      persist timer expires.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  FRCA enabled listener count of current connections is not
  decremented when the persist timer expires.
  
  The FRCA enabled web server has a persistence time configured.
  A client connects and fails to send in a complete request or
  sends in one or more requests that are serviced from the cache.
  The client does not disconnect before the persist timer
  expires, causing the connection to be closed from the local
  side.  The connection state change fails to decrement the
  listener's current connection count.
  +-------------------------------------------------------------+
  + 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

• The FRCA persist timer routine in EZBTCPTM has been amended to
  decrement the listener's current connection count.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

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

  UK91441

Modules/Macros

• EZBTCPTM
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1D0 PSY UK91441

     UP13/03/14 P F303

Fix is available

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