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Problem IC64655
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Status: Closed |
OPTIMIZER UNEXPECTEDLY FAVOURS THE REVERSE ISCAN |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Performance degradation due to reverse iscan |
| Problem Summary: |
User Affected: All
Problem Description: OPTIMIZER UNEXPECTEDLY FAVOURS THE REVERSE
ISCAN
Problem Summary: OPTIMIZER UNEXPECTEDLY FAVOURS THE REVERSE
ISCAN |
| Local Fix: |
db2set DB2_EXTENDED_OPTIMIZATION=NO_REVSCAN_JOIN |
| available fix packs: |
DB2 Version 9.7 Fix Pack 1 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Fixed in fixpak 1 for v9.7 |
| Workaround |
db2set DB2_EXTENDED_OPTIMIZATION=NO_REVSCAN_JOIN |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.11.2009
24.02.2010
24.02.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.
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| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.1
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