PM90591: MULTIPLE FIXES FOR IBM DB2 ANALYTICS ACCELERATOR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• 1.When running with IBM DB2 Analytics Accelerator, SQL CODE -901
  can occur for an offload of a statement containing a DATE, TIME,
  and TIMESTAMP constant.  Allow timestamp precision constants
  greater than 6 with zeroes.
  2.A recursive common table expression does not fail with
  SQLCODE -4742 reason 10 when CURRENT QUERY ACCELERATION=ALL or
  GET_ACCEL_ARCHIVE=YES.
  
  IDAAV3R1/K
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of DB2 11 for z/OS who             *
  *                 are also using IBM DB2 Analytics             *
  *                 Accelerator.                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR contains the following fixes  *
  *                      for IBM DB2 Analytics Accelerator       *
  *                      support:                                *
  *                                                              *
  *                      (1) A recursive common table expression *
  *                          does not fail with SQLCODE -4742    *
  *                          reason 10 when CURRENT QUERY        *
  *                          ACCELERATION=ALL or                 *
  *                          GET_ACCEL_ARCHIVE=YES. EXPLAIN may  *
  *                          not show REASON_CODE=10.            *
  *                                                              *
  *                      (2) SQLCODE -901 is issued when a query *
  *                          has a date, time or timestamp       *
  *                          constant.                           *
  *                                                              *
  *                      (3) SQLCODE -904 might be issued when   *
  *                          a query has a common table          *
  *                          expression with an ORDER BY.        *
  *                                                              *
  *                      (4) A storage leak may occur for an     *
  *                          INSERT with a common table          *
  *                          expression with row permissions.    *
  *                                                              *
  *                      (5) An INSERT statement with            *
  *                          implicit cast on the target table   *
  *                          is not offloaded.                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This APAR contains the following fixes for IBM DB2 Analytics
  Accelerator support:
  
  (1) A recursive common table expression does not
      fail with SQLCODE -4742 reason 10 when
      CURRENT QUERY ACCELERATION=ALL or
      GET_ACCEL_ARCHIVE=YES. When CURRENT QUERY
      ACCELERATION is not NONE, EXPLAIN may
      not show REASON_CODE=10 in DSN_QUERYINFO_TABLE.
  
  (2) SQLCODE -901 is issued when a query has a date,
      time or timestamp constant. For example:
      SELECT TIMESTAMP '2013-05-08 11:22:33.123456'
      FROM T1 FOR FETCH ONLY;
  
  (3) SQLCODE -904 might be issued when a query has a common
      table expression with an ORDER BY.
  
  (4) A storage leak may occur for an INSERT with a common
      table expression with row permissions.
  
  (5) An INSERT statement with implicit cast on the target
      table is not offloaded.
  
  Additional Search Keywords:
  IDAAV3R1/K IDAAV4R1/K SQLCTE SQLEXPLAIN SQLCODE4742 SQLCODE904
  SQLCODE901 SQLDATE SQLTIME SQLTIMESTAMP SQLORDERBY SQLCTE
  DB2STGLK/K SQLINSERT SQLACCESSCONTROL
  

Problem conclusion

• (1) Code is fixed to block offload and fix EXPLAIN results.
  
  (2) Code is fixed to offload the query.
  
  (3) Code is fixed to offload the query.
  
  (4) Code is fixed to resolve the storage leak.
  
  (5) Code is fixed to offload the subselect of the INSERT
      statement.
  

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:

  UK97298

Modules/Macros

• DSNXOEX1 DSNXONZC DSNXONZO DSNXONZS DSNXOOS1
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RB10 PSY UK97298

     UP13/09/19 P F309

Fix is available

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