IT27603: INTERMITTENT NETWORK CONNECTIVITY MAY RESULT IN MEMORY LEAK WHENUSING CSM

APAR status

• Closed as program error.

Error description

• Informix servers configured to use CSM for network connections
  may leak memory if poor network activity results in connections
  being dropped during the initial connection phase. The memory
  leak may be observed as a continual growth in the size of the
  global memory pool as shown by the command onstat -g mem. The
  following command may also be used to show an excess of specific
  memory fragment types which continue to accumulate:
  
  onstat -g afr global | awk '{print $3,$5}' | sort -k 2 | uniq -c
  | sort -rnk 1 | head
  
  Example output:
  
     3334 net osmutex.c:595
     2082 csm-vp cssdspch.c:408
     1637 csm-vp cssstubs.c:927
      360 osenv osenv.c:1151
      355 config mtconfig.c:5441
      355 config mtconfig.c:5439
  ...
  
  The first 3 fragment types listed will continue to accumulate.
  
  The online message log may also show numerous messages with
  error number -25582, -14563 and/or -14565.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of IDS 12.10.xC12 and older versions.                  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Intermittent network connectivity may result in memory leak  *
  * when using CSM                                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Fixed in IDS 12.10.xC13.
  

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:

Fix information

• Fixed component name

  INFORMIX SERVER

• Fixed component ID

  5725A3900

Applicable component levels