IBM Data and AI Ideas Portal for Customers


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Db2

Showing 1399

Make DB2 federation option DB2_TWO_PHASE_COMMIT compatible with HOST and PORT options

The new Db2 11.5 HOST and PORT options (see https://www.ibm.com/docs/en/db2/11.5?topic=options-database) remove the need to catalog federated source Db2 databases for standard connections. This simplifies configuration. However, for two phase comm...
8 months ago in Db2 / Federation 0

Perform rebuild of each index (for a table) in its own transaction

In the current design, all the index rebuilds for a table are performed within the same transaction (as the action that triggered them). If the transaction is interrupted (e.g. user interrupt or dropped session), then the entire transaction is rol...
about 10 years ago in Db2 / Utilities (Export Import Load db2look etc) 2 Not under consideration

Auto-pruning for automatic DB2 Backups

The DB2 LUW automatic backup creation, which is enabled by the parameters AUTO_MAINT and AUTO_DB_BACKUP and configured by the 'AUTO_BACKUP' maintenance policy XML, currently does not consider the db2 automatic pruning functionality, configured by ...
over 7 years ago in Db2 / Backup/Restore/ Rollforward/ Recover 0

Estimate the optimal BLU columnar compression rate by sampling data

A technique is needed to determine optimal data compression rates for BLU columnar tables. Such a utility should estimate the optimal compression rate without and with the new string compression enhancements delivered in Db2 11.5 code stream. In e...
over 1 year ago in Db2 / BLU Acceleration 1 Functionality already exists

Add generated always for each row on update as row change SESSION_USER

Currently exists in Db2 to change current timestamp on INSERT and UPDATE with generated statement like: create table myschema.mytable (id int, last_timestamp timestamp not null generated always for each row on update as row change timestamp) inser...
about 2 years ago in Db2 / Statements (DDL and DML) 1 Future consideration

support "fixed record length" for load/import with UTF8

Load and import do not support "fixed record length" for MBCS.The field offsets have to be specified in bytes only.There is no possibility to let the data movement tools "think in letters, instead of bytes".
about 8 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

"delete cascade" does not work with "not enforced"

The option "not enforced" on a foreign key invalidates an already set "on delete cascade" option, although this is not visible anywhere within the data model or documentation. In my opinion, setting one of these options should prohibit the other o...
over 1 year ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Compression for automatic DB2 backups

DB2 LUW includes a solution for automatic backup creation, which is enabled by AUTO_MAINT and AUTO_DB_BACKUP parameters and configured by the 'AUTO_BACKUP' maintenance policy XML..The policy XML file does not allow to specify options to enable bac...
over 7 years ago in Db2 / Backup/Restore/ Rollforward/ Recover 0

Reorg pending status should be in a table like SYSCAT.TABLES

The column that indicates if a table is in reorg-peding is in a table that is not in the schame SYSCAT. This value should be in a table in SYSCAT, because this schema is the catalog, and it is almost standard across versions, and it is a set of vi...
almost 5 years ago in Db2 / Other/Unknown 0 Not under consideration

InsteadOF SQL

It is common in the database world (DB2 but all the others I have worked with are the same) to have a separate product installed that generates code and submits it to the database for processing. Eventually, you will encounter SQL that doesn't per...
almost 7 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

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