IBM Data and AI Ideas Portal for Customers


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Db2

Showing 1369

Optimizer does not use HIGH2KEY/LOW2KEY for columns with COLCARD 1

Optimization issue if a business_time_oriented table has only one row. In syscat.columns the content of the business_time columns are detected (high2key, low2key) but the value can not be found in the distribution statistics. This leads default fi...
over 1 year ago in Db2 / Statements (DDL and DML) 1 Future consideration

Change the mapping of a timestamp with timezone from varchar to a Db2 timezone for a Postgres database source

Currently the timestamp with timezone in a Postgres source database is mapped to a varchar and that limits how you can query and manage it. Other data sources map this data type to a timestamp allowing for normal processing using the various time ...
about 1 month ago in Db2 / Federation 0 Submitted

Improve SQL0293N when creating database on 4K sector size disk

On CREATE DATABASE db2 reports a very generic error message SQL0293N when there is a write access to a 4K sector size disk. Instead should do a check when creating containers e.g. read 512 bytes, if this does not work, read 4K block. If 4K block c...
about 1 month ago in Db2 / Serviceability 0 Submitted

Db2 TOTAL_CPU_TIME monitoring metric on AIX should reflect "wall" CPU time and not use PURR-scaled time reported currently by thread_cputime AIX API

Db2 monitoring interfaces report "CPU time" metric (TOTAL_CPU_TIME), which accounts the time that given activity/request (and all higher level aggregated interfaces) spent actively "on CPU" whilst executing the query. On AIX this information is ob...
about 1 year ago in Db2 / BLU Acceleration 0 Future consideration

Allow IAM access for server to S3 to work for Db2 backups

AWS allows a server or container to have an IAM role that allows access to S3 and other resources without authentication. However, cataloging a storage alias requires a key and secret key to work, regardless of whether the IAM role is set up for t...
about 3 years ago in Db2 / Backup/Restore/ Rollforward/ Recover 4 Future consideration

Pacemaker to support Multiple primary VIPs across different interfaces if needed

We have a requirement to isolate the public traffic and qreplication traffic, so we normally create two interfaces on servers , one for public and one for qrep, currently with TSA we create a floating VIP for public interface and one for qrep inte...
4 months ago in Db2 / Operating System/Virtualization 0 Submitted

Allow parallel offline table reorg of range partitioned tables with non partitioned indexes (NPI)

Offline (classic) table reorgs might still be necessary in certain scenarios and can run for a very long time for huge tables (>24h). It is very hard to find a suitable window in a 24x7 System. Offline table reorgs - which have at least one non...
9 months ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Under review

IBM Infosphere Data Replication Management Console – DB2 LUW LOAD Utility.

Change Data Capture (CDC) Subscriptions mirroring from DB2 LUW to Event Server (JMS) are constantly failing due to some LOADs performed on DB2 LUW side. We must manually recycle affected LOAD table whenever they fail to restart the subscriptions f...
11 months ago in Db2 / Replication 1 Submitted

Online index reorg for pureScale

Currently online index reorganization is not supported in Db2 pureScale environments and will fail with SQL1419N.
almost 5 years ago in Db2 / pureScale / Tables/Index (Range MQ MDC etc.) 2

STMM Monitoring

With the memory statistics similar to the ‘db2pd -dbptnmem’ output within the STMM logs, it would be possible to get memory usage report over time from Db2 perspective without any permanent monitoring tool (as long as STMM is used/active). It woul...
almost 2 years ago in Db2 / Monitoring / Other/Unknown 1 Future consideration

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