PM66983: SQLCODE901 SYSTEM ERROR FROM IBM DB2 ANALYTICS ACCELERATOR TOKEN 58004 with outer join and complex view query

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• set current query acceleration = enable
  ;
  select * from COMPLEX_VIEW_WITH_OUTER_JOIN;
  ---------+---------+---------+---------+---------+---------+---
    COL1 COL2 COL3
  ---------+---------+---------+---------+---------+---------+---
  DSNT408I SQLCODE =   -901, SQLSTATE = 58004, SYSTEM ERROR FROM
  IBM DB2  ANALYTICS ACCELERATOR TOKENS 58004:
  
  
  Additional Keywords:
  IDAAV2R1/K SQLCODE901 SQLJOIN SQLVIEW
  

Local fix

• disable  query acceleration
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of DB2 10 for z/OS who are also    *
  *                 using IDAA ( IBM DB2 Analytics Accelerator ) *
  ****************************************************************
  * PROBLEM DESCRIPTION: (1) Query offload to an accelerator     *
  *                      fails when a GROUP BY expression does   *
  *                      not match the corresponding SELECT list *
  *                      expression.                             *
  *                                                              *
  *                      (2) Query offload to an accelerator     *
  *                      fails when there are multiple views     *
  *                      in a complex query.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  (1) Query offload to an accelerator fails with SQLCODE -904
  when a GROUP BY expression does not match the corresponding
  SELECT list expression. For example:
  
  SELECT 3+(C1+C2),C4
  FROM T1
  WHERE C3 >1
  GROUP BY (C1+C2)+3,C4
  ORDER BY 2,1;
  
  (2) Query offload to an accelerator fails with SQLCODE -901
  when for a complex query with multiple views.
  
  
  Additional keywords:
  SQLCODE904 IDAAV2R1/K SQLGROUPBY SQLCODE901 SQLVIEW
  

Problem conclusion

• (1) The converted query text used for offload is fixed so that
  the GROUP BY expression matches the SELECT list expression.
  
  (2) The converted query text used for offload is fixed so that
  the complex query with multiple views executes successfully.
  

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:

  UK80823

Modules/Macros

• DSNXONZC
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UK80823

     UP12/08/21 P F208

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.