IC68651: CDRGEVAL THREADS CAN SOMETIMES LEAK MEMORY / OPEN RSAM FILE INFO WHEN HAVING TO SPOOL TRANSACTION FROM MEMORY TO DISK

APAR status

• Closed as program error.

Error description

• Under some conditions the CDRGeval threads will be called upon
  to take transactions from the in memory sendq and spool them to
  disk.  Sometimes this spooling requires the eval thread to
  update the syscdr:replaytab.  When it needs to do this, it will
  open the syscdr:replaytab and not close it.  Every time it needs
  to do this, it reopens syscdr:replaytab, which leaks memory and
  rsam open file info (open files as reported in onstat -g opn).
  
  Looking at onstat -g opn output for CDRGeval threads and seeing
  the partnum for the syscdr:replaytab repeatedly, all with
  different isfd output, then that would be a good indication of
  this defect.
  
  For example:
  
   onstat -g opn
  IBM Informix Dynamic Server Version 11.50.F       -- On-Line --
  Up 01:11:20 -- 687904 Kbytes
  tid  rstcb                        isfd     op_mode    op_flags
       partnum    ucount ocount lockmode
  61   0x000000004b8424f8 0     0x00000400 0x00000397 0x001000a4 4
           4      0
  61   0x000000004b8424f8 1     0x00000002 0x00000003 0x001000a4 4
           4      0
  61   0x000000004b8424f8 2     0x00000442 0x00000797 0x001000a4 4
           4      0
  61   0x000000004b8424f8 3     0x00000440 0x00000697 0x001000a4 4
           4      0
  
  In this output the partnum for the syscdr:replay table would
  have been 0x1000a4, and tid 61 would be for a CDRGeval# thread.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * any user using ER in which the spooling threads are not able *
  * to keep up                                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Incorrect checking was occurring, causing the problem.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to 11.50.xC8 and above.                              *
  ****************************************************************
  

Problem conclusion

• Problem first fixed in 11.50.xC8.
  

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

  IBM IDS ENTRP E

• Fixed component ID

  5724L2304

Applicable component levels

• RB15 PSN

     UP

• RB15 PSY

     UP