IBM Data and AI Ideas Portal for Customers


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Db2

Showing 989

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

Asynchronous index rebuild at restart

When an index rebuild is required at the restart time, it can depend on the connection of the first user accessing the table. If the connection is killed, the index rebuild need to redone. It would be smarter to let the rebuild complete even if th...
over 7 years ago in Db2 / High Availability and/or Disaster Recovery 0 Not under consideration

Re-build synopsis statistics in BLU

Provide a function to rebuild the synopsis table metadata online/offline to improve query performance.
over 8 years ago in Db2 / BLU Acceleration 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

ADMIN_TAB_INFO is sloooow and this has been the case for quite sometiome.

Extremely slow when used in a RP environment. Also used by check_upgrade which takes 7+ hours to run. Environment has 2million+ objects, 1 range per day for 3 years. Check_upgrade may be calling check for load pending which used admin_tab_info
over 9 years ago in Db2 / Monitoring 0 Not under consideration

Be able to DROP "restore pending" TABLESPACES supporting RP tables after RESTORE REBUILD

After RESTORE REBUILD of a slice of Prod DB into Pre-Prod DB, it is impossible to drop "Restore Pending" tablespaces supporting RP tables, you get SQL0282N. You can't detach "unrestored" partitions into junk either SQL0290N. So you are stuck and t...
over 9 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Logical Files in QPFRDATA should be secured with AUTL QPMCCDATA

Hi, on IBMi Collection services you have several file in QPFRDATA. Mostly all PF are secured with the AUTL QPMCCDATA. There are also some LF like: QAPMJOBL, QAPMSYSL, and QAPMPOOLL which are secured by AUTL: *NONE. Normally we add our user to the ...
12 months ago in Db2 / Monitoring 0 Not under consideration

Db2 LUW TSM incremental and/or delta backups from FlashCopy off-load server based backup

The Federal Financial Supervisory Authority of Germany (BaFin) uses the Spectrum Protect Snaphot (SPS, aka FlashCopy Manager, FCM) software to create Db2 FlashCopy Backups and to offload them to a backup system. From this backup system are Db2 bac...
about 1 year ago in Db2 / Backup/Restore/ Rollforward/ Recover 1 Not under consideration

Enhance correlated subquery cardinality estimate with stat views

Peoplesoft application extensively uses correlated subqueries on EFFDT to check that EFFDT = (SELECT MAX(EFFDT) FROM ...). Cardinality estimations can be derived from PK, but this sometimes is not sufficient. We need to be able to get EFFDT estima...
about 1 year ago in Db2 / Other/Unknown 0 Not under consideration

Log Failed LOADS in db history file

Please refer to IBM CASE TS012541333 for further details Db2 database history file registers several SUCCESS and FAILED operations. If a backup has been executed, and if it failed or completed ok . if a restore has been done, and if it failed or c...
about 1 year ago in Db2 / Utilities (Export Import Load db2look etc) 3 Not under consideration

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