PM16546: THE FAILURE OCCURS ON A SELECT STATEMENT WITH XMLQUERY, UNION ALL AND ORDER BY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The failure occurs on a SELECT statement with XMLQUERY,  UNION
  ALL and ORDER BY.
  

Local fix

• No Work Around
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DB2 users who use order by with          *
  *                 union all and XML functions.                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: An ABEND0C4 at dsnnxml.dsnnoget         *
  *                      could occur when an SELECT              *
  *                      statement contains union all with       *
  *                      order by and the select list of         *
  *                      one union all branch contains an        *
  *                      XML function.                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an SELECT statement contains top-level union all
  with order by and the select list of one union all
  branch contains an XML function, an ABEND0C4
  at dsnnxml.dsnnoget could occur because DB2 freed the
  storage for the XML function result too earlier.
  
  The following is an example of the failed queries:
   SELECT c1,
          xmlQuery('$c/o/a/l/e/o'
          passing xmlcol as "c") as vertrag
  from T1
  UNION ALL
  select C1,
         xmlQuery('$c/o/a/l/e/o'
           passing xmlcol  as "c") as vertrag
  from T2
  order by 1
  

Problem conclusion

• DB2 is fixed to manage the storage for XML functions correctly
  for union all with order by queries.
  
  Additional keywords: SQLXML  SQLUNION
  

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:

  UK59931

Modules/Macros

• DSNXOOS2
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• R910 PSY UK59931

     UP10/09/08 P F009

Fix is available

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