IT10780: WINDOWS: THREAD SUSPENSION CAN ABORT THE INSTANCE WITHOUT A SHARED MEMORY DUMP BEING WRITTEN

APAR status

• Closed as program error.

Error description

• In recent versions a thread suspension feature is included and
  active by default. In the case of an assertion that would
  otherwise have led to a crash with thread suspension the
  instance will try to check if the affected thread is holding
  critical resources. If this is not the case the thread will be
  suspended only, avoiding the crash and leaving the opportunity
  to defer the instance restart to a more convenient time in the
  future.
  
  In this case currently (another defect is open to address this
  aspect of the default behavior) no shared memory dump will be
  written regardless of the DUMPSHMEM setting.
  
  For versions running on the Windows platform it has been
  observed that this thread suspension can lead to an unintended
  crash of the instance.
  
  To achieve a shared memory dump for better diagnostic abilities
  in this situation the thread suspension feature needs to be
  deactivated.
  
  This can be achieved by setting
  
  AFCRASH     0x481
  
  in the ONCONFIG file of the instance. After a restart you can
  verify the setting of AFCRASH with "onstat -g ras".
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users on Windows platforms.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Update to IBM Informix Server 12.10.xC6                      *
  ****************************************************************
  

Problem conclusion

• Problem Fixed In IBM Informix Server 12.10.xC6
  

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

• RC10 PSY

     UP