IT19197: DB2 MIGHT PRODUCE INCORRECT RESULT WHEN EXECUTING XQUERY WITH MULTIPLE OR SUBTERMS

DB2 Version 11.1 Mod 2 Fix Pack 2 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod4 Fix Pack4 iFix001 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• DB2 might produce incorrect result when executing a query with
  following:
  1) The query must be of type XQuery
  2) There must be at least one reference to XML table
  3) The XML column is referenced in two or more OR subterm
  predicates.
  
  eg.
  select Col from SAMPLE_XMLTAB AS tablewithxml INNER JOIN
  XMLTABLE('$XMLDATA' passing XMLDATA AS XMLDATA COLUMNS Col DATE
  PATH 'cf/date/tc64171datem[1]/text()', Col2 VARCHAR(1024) PATH
  'cf/text/tc64171textm[1] /text()') AS thexmltabletable ON 1 = 1
  where ( Col > current timestamp or Col IS NULL   );
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 11.1 Mod 2 Fix Pack 2 or higher               *
  ****************************************************************
  

Problem conclusion

• First fixed in DB2 11.1 Mod 2 Fix Pack 2
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IT19095

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels