IBM Data and AI Ideas Portal for Customers


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Tables/Index (Range MQ MDC etc.)

Showing 81

DB2 database in a read only mode

Ability to place a DB2 database in a read only mode for a period of time. Out side of the "db2 set write suspend for database" or a quiesce.
about 9 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 1 Not under consideration

Support synchronous detachment of a table partition

Starting with DB2 9.7(?) the detachment of table partitions is handled asynchonously. To simulate synchronous behaviour a complicated work around has to be put in place. Such a behavior could be triggered by a new DML keyword such as ASYNC.
about 8 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

DB2 performance - Hash partition table

On the VLDB - Very Large Database environment.DB2 should support hash partition table to improve performance especially pureScale environment.
over 7 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 1 Not under consideration

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 ...
about 7 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

The support of IRS capture on pureScale EHL mode

In pureScale, Explicit hierarchical Locking is supported when opt_direct_wrkld set to ON.However, IRS capture is stopped abnormally due to SQL error.
about 6 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Increase maximum numbers of columns in an index key from 64 to 120

Db2 has the lowest limit of allowed index columns compared to the competitors.
almost 6 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Make online REORG respect UTIL_IMPAT_LIM

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...
over 4 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Parallel Classic Reorg on a partitioned table

Many DBA want to run multiple partitions in partitioned table.at a same time Serial execution takes too long time, it is not really efficient.
almost 5 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 1 Not under consideration

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...
almost 9 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

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 ...
over 7 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

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