PI67932: ABEND0C4 AT DSNXGXTT OFFSET078E FOR QUERY ON XML AND REFERENCED TUDF OR VIEW

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND0C4 at DSNXGXTT OFFSET078E for query on XML and referenced
  TUDF or view, the abend was caused by wrong address of
  XMLnamespace URI
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DB2 11 for z/OS users of an SQL                          *
  * statement containing a view or SQL table                     *
  * function with an XMLELEMENT and                              *
  * XMLNAMESPACES function.                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABEND0C4 at DSNXGXTT OFFSET078E or                           *
  * ABEND0C4 at DSNXOV1 OFFSETB25C could                         *
  * happen for an SQL statement satisfying                       *
  * all of the following conditions:                             *
  * 1. It references a view or SQL table                         *
  * function.                                                    *
  * 2. The view or SQL table function                            *
  * contains more than one CTE.                                  *
  * 3. These CTE reference more than one                         *
  * XMLELEMENT function.                                         *
  * 4. Some of XMLELEMENT in the CTE don't                       *
  * have XMLNAMESPACES function.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An example is shown below:
  
  CREATE TABLE T1 ( C1 XML, C2 DECIMAL(18,0));
  
  CREATE FUNCTION TUDF1()
    RETURNS TABLE(CAMT054 XML)
    LANGUAGE SQL
    NOT DETERMINISTIC
    NO EXTERNAL ACTION
    READS SQL DATA
    RETURN
    with
    CTE1 as(
    select
      xmlelement(name "cte1",
                 xmlattributes(T1.C2 as "Num"),
                 xmlelement(name "test1",'test')
      ) NTRYDTLS
    from T1
    ),
     "DOCUMENT" as(
     select
       XMLELEMENT(name "Document",
         XMLNAMESAPCES(default 'http://posample.org'),
           (select C1 from CTE1)
       ) DOC
      from T1
      )
     select  DOC
      from "DOCUMENT" ;
  
   SELECT *    FROM TABLE(TUDF1( ));
  
  Because the XMLELEMENT in CTE1 doesn't have XMLNAMESPACE, DB2
  did not correctly process the aforementioned SQL statement and
  resulted in ABEND0C4 RC38 at DSNXGXTT OFFSET078E or ABEND0C4 at
  DSNXOV1 OFFSETB25C.
  

Problem conclusion

• DB2 has been modified to correctly process the aforementioned
  SQL statement.
  
  Additional Keywords: SQLXML SQLVIEW SQLCTE SQLTABLEEXPR SQLTUDF
  SQLTABLEUDF
  

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:

  UI41395

Modules/Macros

• DSNXOEX1 DSNXOOS1 DSNXOP0
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RC10 PSY UI41395

     UP16/10/19 P F610

Fix is available

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