IT27505: UPDATE STATISTICS HIGH FOR A TABLE USING FRAGMENT LEVEL STATISTICS MAY CONSUME EXCESSIVE MEMORY

APAR status

• Closed as program error.

Error description

• When running update statistics high for a table using fragment
  level statistics and containing many fragments the amount of
  memory used by the session may become very large.
  
  For example a table defined with interval fragmentation having
  620 million rows over more than 600 fragments consumed around
  2.4 GB memory for a sort pool when running update statistics
  high for a serial8 column.
  
  If the table schema is altered so that fewer fragments are used
  then the update statistics command will require less memory.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of IDS 12.10.xC10 and earlier versions.                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Update statistics high for a table using fragment level      *
  * statistics may consume excessive memory.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Fixed in IDS 12.10.xC11.
  

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