IBM Data and AI Ideas Portal for Customers


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Db2

Showing 1395

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

Provide the option to exclude SELECT statements from db2audit when collecting DML data

The painful and expensive IBM recommended workaround that ended up not being feasible was to create event monitors (multiple so that records can be cleared) with WLM. However, the volume and format of output generated by the event monitors is diss...
about 4 years ago in Db2 / Security 0 Not under consideration

Add CLP commands not supported by ADMIN_CMD to CLPPlus

Some CLP commands are neither supported by CLPPLUS or ADMIN_CMD. BIND, REBIND and the various REGISTER commands for XSR are particularly troublesome examples. This means that we have to revert to CLP processing rather than doing everything in CLPPLUS
about 7 years ago in Db2 / Utilities (Export Import Load db2look etc) 2 Not under consideration

Add more coordinate system into DashDB, like GCS_WGS_1984_MAJOR_AUXILIARY_SPHERE

Now I am trying to migrate the IBM IOC database from DB2 to DashDB on Bluemix. However, when running the following cmds to create the resource, db2 "call db2gse.ST_create_srs('WGS84_AUX',300,-180,100000,-180,null, null, null, null,null, 'GCS_WGS_...
about 7 years ago in Db2 1 Not under consideration

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

Improved Db2 backup thread (db2bm and db2med) binding/distribution on NUMA systems

On a large NUMA systems with a very fast storage and a fast backup target memory affinity might affect backup time as well as the overall system performance during the activity. Currently, with the Db2's automatic thread NUMA binding (DB2_RESOURCE...
almost 3 years ago in Db2 / Backup/Restore/ Rollforward/ Recover 1 Future consideration

Case TS000932532 - Load should be able to bypass a GENERATED-ALWAYS-from-variable column

ProblemA load on a table containing a certain type of GENERATED ALWAYS column fails with the very odd message "Unexpected load gencol section".Research pointed out that LOAD cannot handle in any way a GENERATED ALWAYS column getting its informatio...
over 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

LOAD should allow collecting STATISTICS without USE PROFILE option for row based tables

LOAD collects "default" statistics like auto-runstats when loading into BLU (RUNSTATS ... WITH DISTRIBUTION AND SAMPLED DETAILED INDEXES ALL).I assume this got not changed because the fear of incompatibility with existing behavior. Therefore pleas...
over 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

ALTER TABLE LOCKSIZE TABLE for BLU tables

ALTER TABLE LOCKSIZE TABLE is an easy way to save lock list and lock acquire for tables that just get accessed by a single application at a given time.
over 6 years ago in Db2 / BLU Acceleration 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

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