|
Problem IT07703
|
Status: Closed |
WHEN A DATABASE IS ORACLE COMPATIBLE, A STATEMENT HEAP CAN GROW ENORMOUSLY WHEN A QUERY HAS A LOT OF REFERENCES TO DUAL TABLE. |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
This can only happen when Oracle Compatibility is enabled.
When one query uses a lot of DUAL (for instance, with UNION ALL
clause), compiling that query can drive a statement heap to a
enormous size. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 9.7 Fix Pack 11 *
**************************************************************** |
| Local Fix: |
The workaround is to replace DUAL with SYSIBM.SYSDUMMY1. |
| Solution |
First fixed in DB2 9.7 Fix Pack 11 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 15.03.2015
03.05.2017
16.10.2017 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP11
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.11
|
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