IC72394: [WIN] UPGRADE TO 11.50 PID RESETS ONCONFIG PARAMETER MIRROR TO DEFAULT VALUE 0

APAR status

• Closed as program error.

Error description

• A Fixpack or PID upgrade on Windows platforms can lead to
  mirroring being switched off unintentionally.
  In that case the Onconfig parameter MIRROR is automatically set
  to its default value 0,
  and Informix will continue running without mirrored chunks.
  
  There will be an entry in onlinelog if this happens:
  16:51:10  Onconfig parameter MIRROR modified from 1 to 0.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users using mirroring who upgrade to Informix 11.50.         *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * A PID upgrade on Windows platforms can lead to mirroring     *
  * being switched off unintentionally.                          *
  * In that case the Onconfig parameter MIRROR is automatically  *
  * set to its default value 0,                                  *
  * and Informix will continue running without mirrored chunks.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Use Informix version 11.50.xC9 to upgrade from older         *
  * version.                                                     *
  ****************************************************************
  

Problem conclusion

• This problem is will be fixed in version 11.50.xC9 and later.
  Mirror parameter in onconfig file will retain its old value
  during upgrade.
  

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 PSY

     UP