DB2 FOR LUW / DB2FORLUW / 950 - DB2

To hit the problem, a query needs satisfy all the following 
characteristics: 
(1) Query has UNION ALL or LEFT OUTER JOIN construct. 
(2) Query has ORDER BY clause applied on the result of UNION ALL 
or 
    LEFT OUTER JOIN 
(3) At least two columns in ORDER BY clause are equivalent. 
(4) The Fetch First N rows clause is used. 
 
The problem symptom is one of two SQL0901N errors: 
 
SQL0901N  The SQL statement failed because of a non-severe 
system error. 
Subsequent SQL statements can be processed.  (Reason 
"this->qclqclord.pp() != 
NULL".)  SQLSTATE=58004 
 
or 
 
SQL0901N  The SQL statement failed because of a non-severe 
system error. 
Subsequent SQL statements can be processed.  (Reason 
"sqlno_int_order_opr_req 
[400]:rc(-2144272209) Sibling order r".)  SQLSTATE=58004 
 
An example query is 
select * from table (select * from t1 union all select * from 
t2) 
where c1 = 1 and c2 = 2 and c3 = 1 and c4 = 4 
order by c1, c2, c3, c4 
fetch first row only;

**************************************************************** 
* USERS AFFECTED:                                              * 
* all                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* SQL0901N error may be returned on some very specific         * 
* SQLstatements.See long description in apar text for a detail * 
* on theconditions.                                            * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade the server to V9.5 Fix Pack 6, or apply one of       * 
* theworkarounds mentioned.                                    * 
****************************************************************

Remove the ORDER BY columns that equal to constants. 
Or change predicate "c3=1" to "c3=1.0".

DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
 DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
 DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
 DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
 DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
 

The problem was first fixed in V9.5 Fix Pack 6

keiner bekannt / siehe Local-Fix

Vorgänger  : APAR is sysrouted TO one or more of the following: IC66189 IC66190 IC66191 
Nachfolger : 

Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:

04.02.2010
22.06.2010
28.07.2010

9.5.FP6,
9.5.FP6