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Support mixed row/column environments without requiring CUR_COMMIT=ON
We have recently run into a problem when we enable Cur_commit because of the locking behavior expected by some applications (they expect blocking). Therefore, we have to disable CC, but then that app cannot use blu. We want to give our plant the a...
The option ordinality is used in XML queries but the overall performance is very slow
We use the for ordinality option in our queries but the over all performance is very poor.There is a specific XSCAN needed when ordinality is specified which takes a long time. this XSCAN produces a sequence of XML ELEMENTS. This sequence is then ...
Currently, an online REORG will run as fast as it can (but I think limited to a single thread).It would useful if we made it respect the utility throttling limit that we have in place for other types of maintenance activities (runstats, backup, re...
To remove tablespace maintenance restrictions on pureScale
To remove all the restrictions of SQL1419N Reason code = "11" on pureScale. 11 Altering database containers is not supported in a DB2 pureScale environment. As a result, the following clauses are not supported with the ALTER TABLESPACE statement i...
Use FSCR information to ommit empty data pages while performing Table Scan (TBSCAN)
ABSTRACT:Table scan over volatile table with large number of empty pages scans all empty pages instead of using FSCR to find pages to be scanned. VERSION INFORMATION:DB2 9.7.FP5 on Linux / DB2 9.7.FP9a on AIX 7.1 / DB2 10.5.FP4 on Linux TECHNICAL ...
Allow converting of the SYSCATSPACE to the reclaimable storage.
There is no way to convert the Catalog tablespace to RECLAIMABLE storage. The only workaround is to create a new database and to migrate the objects and the data. Since, we have a lot of databases which were created in pre-9.7 versions, we are stu...
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