IT36138: RE-OPTIMIZATION OF QUERY CONTAINING DUPLICATE REMOVAL OPERATION MAY RESULT IN ERROR -392

APAR status

• Closed as program error.

Error description

• If a query whose query plan includes an operation to remove
  duplicates is re-optimized then the error -392 "System error -
  unexpected null pointer encountered" may be returned. A remove
  duplicates operation is shown in the set explain output by the
  following text:
  
  REMOVE DUPLICATES
      Remove Duplicates Keys: <owner>.<table>.<column>
  
  This problem may not be seen in versions prior to 12.10.FC14 or
  14.10.FC3.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Server prior to 12.10.xC15 and 14.10.xC6.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Server 12.10.xC15 (when available) or    *
  * 14.10.xC6 (when available).                                  *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Server 12.10.xC15 and 14.10.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