IT40986: ENHANCEMENT FOR CHECKPOINT PROCESSING

APAR status

• Closed as program error.

Error description

• The initial phase of checkpoint processing will block all
  threads from entering critical section whilst a number of
  actions are performed. One of these actions is to write out the
  dbspace and chunk reserved pages. Where there are a large number
  of dbspace and/or chunks this activity may represent a
  significant proportion of the blocking time due to the way in
  which the pages are written.
  
  By performing the page writes in larger blocks the efficiency
  may be improved leading to a reduction in time required.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 12.10.xC16 and 14.10.xC9.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Server 12.10.xC16 (if available) or      *
  * 14.10.xC9.                                                   *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 12.10.xC16 and 14.10.xC9.
  

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