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DB2 - Problem description

Problem IT16869 Status: Closed

SELECT ROW CHANGE TOKEN WILL RETURN WRONG RESULT WHEN USING RIDSCAN (ROW
IDENTIFIER SCAN)

product:
DB2 FOR LUW / DB2FORLUW / B10 - DB2
Problem description:
SELECT ROW CHANGE TOKEN will return wrong result when using 
RIDSCAN (Row Identifier Scan) 
 
e.g.: following sql will return wrong result when using RIDSCAN 
( (Row Identifier Scan) 
 
 
=> db2 "select row change token for  bas.QUEUEINFO_20160723 FROM 
bas.QUEUEINFO_20160723 where id < 4467" 
 
1 
-------------------- 
                   0 
                   0 
                   0 
                   0 
                   0 
                   0 
                   0 
                   0 
                   0 
                   0 
 
... 
                   0 
                   0 
 
  140 record(s) selected. 
 
Access Plan like following: 
----------- 
        Total Cost:             36.5867 
        Query Degree:           1 
 
               Rows 
              RETURN 
              (   1) 
               Cost 
                I/O 
                | 
              140.456 
              FETCH 
              (   2) 
              36.5629 
                33 
           /----+-----\ 
       140.456         4922 
       RIDSCN     TABLE: BAS 
       (   3)   QUEUEINFO_20160723 
       6.9544           Q1 
          1 
         | 
       140.456 
       SORT 
       (   4) 
       6.95392 
          1 
         | 
       140.456 
       IXSCAN 
       (   5) 
       6.91635 
          1 
         | 
        4922 
   INDEX: SYSIBM 
 SQL160808050052790 
         Q1
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Please, see error description and install this Fix.          * 
****************************************************************
Local Fix:
Use an optimizer guideline to choose a different access, like 
IXSCAN: 
<IXSCAN TABLE='tablename_in_query'/>
available fix packs:
DB2 Version 11.1 Mod1 Fix Pack1 iFix001 for Linux, UNIX, and Windows
DB2 Version 11.1 Mod 2 Fix Pack 2 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows

Solution
Please, see error description and install this Fix.
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
01.09.2016
16.07.2018
16.07.2018
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
11.1.1.1 FixList