IBM Data and AI Ideas Portal for Customers


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Db2

Showing 1366

Expand DB CFG ddl_compression_def with adaptive option

The adaptive DB CFG extension would give us the opportunity to activate adaptive compression by default. At the moment it is only possible to activate the static camprosseion. Our idea is to set DDL_COMPRESSION_DEF to one of 3 possibilities: 1. NO...
6 months ago in Db2 / Configuration Parameters 0 Submitted

auto-reorg OLR for cleanup of overflows

Auto-reorg should use online window to issue REORG CLEANUP OVERFLOWS (and also trigger a RUNSTATS afterwards).Problem to solve: SQL optimizer thinks overflow accesses are quite expensive and then might to start choosing different access plans that...
about 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 1 Not under consideration

Section actuals for BLU

Collecting section actuals and compare it with the SQL compiler estimates using the db2caem tool is quite handy to find cardinality mis-estimates in huge plans.
about 6 years ago in Db2 / BLU Acceleration 0 Not under consideration

Performance penalty in LOAD when using large bufferpool

LOAD RESETDICTIONARYONLY and other LOADs take very long, if table resides in large buffer.The limitation also applies to LOAD on row based tables, but bufferpools on BLU systems tend to be much larger.
about 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 1 Not under consideration

DB2HOST variable needed for PureScale to redirect and define IP to participating subnet's

In Db2 PureScale GDPC the Db2 cluster is distributed on 2 different physical locations and a Quorum Host (tie breaker node) on a 3rd location.The general Db2 install routines use the 'system hostname' (gethostbyname) for the ongoing install proced...
over 5 years ago in Db2 / pureScale 1 Not under consideration

What part of Db2 still requires 32-bit support?

While talking with Keri Romanufa at IDUG Philadelphia I was asked to enter this as an RFE to be checked on.During a Db2 LUW installation for pureScale on a 64-bit machine, which will have only(!) 64-bit executables, a lot of 32-bit libraries are r...
about 6 years ago in Db2 / Installation & Upgrade 1 Not under consideration

Security enhancement - support of roles for GRANT SETSESSIONUSER privilege

After the change of the security setup in DB2 database to a role based model there is still a part where some rights can only be granted to groups instead of roles. This forces admins to maintain to sets of security setups making a complex Task ev...
over 7 years ago in Db2 / Security 0 Not under consideration

Monitoring Metrics Filter

Hi - While using DMC we noticed that its very much resource intensive since it monitor a lot of different metrics in database. There should be an option where we can use it for different monitoring levels like basic, avg or in-depth depends upon d...
about 2 years ago in Db2 / Data Management Console 1 Future consideration

Make DB2_USE_ALTERNATE_PAGE_CLEANING=ON the default

DB2_USE_ALTERNATE_PAGE_CLEANING is of great benefit for performance and scalability since it was introduced in v8. It's now the default in pureScale and BLU environments, so why can't we make it the default all around?
over 5 years ago in Db2 / Configuration Parameters 0 Not under consideration

JDBC driver parameter to compress LOB/XMLs to reduce network overhead

We have a JDBC application INSERT or UPDATING a LOB/XML column. Currently this can cause transaction slowness as the INSERT or UPDATE has to wait for the uncompressed LOB to travel across network.
about 4 years ago in Db2 / Db2 Connect and Drivers 0 Not under consideration

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