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

Parallel Runstats collection on a partitioned-table(RIMS)

[JPMC EDW] Currently, when a Runstats is performed on a partitioned-table, each partition is processed sequentially. This can prolong the duration of Runstats operation, especially for very large tables where Runstats duration is concerning. Ideal...
about 9 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

The support of IRS capture on pureScale EHL mode

In pureScale, Explicit hierarchical Locking is supported when opt_direct_wrkld set to ON.However, IRS capture is stopped abnormally due to SQL error.
about 6 years ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Refresh Command for External Fenced Routines

For our external Stored Procedures (written in Cobol, PL/1, C) we need 1. the flexibility of keepfenced=no to get changes in shared-objects active (i.e: in case of hotfixes) without a restart of db2.2. the speed of keepfenced=yes, because by the s...
about 3 years ago in Db2 / Configuration Parameters 0 Not under consideration

Enhanced flexibility for SYSMON_GROUP

Some privileges like SYSMON (or SYSADM, SYSCTRL and SYSMAINT) are only available in DBM CFG for OS group members. We can imagine the following scenerio to enhance flexibilty for those priviliges:Allow adding additional OS groupse.g. db2 update dbm...
over 9 years ago in Db2 / Configuration Parameters 0 Not under consideration

allow LDAP based db2 instance user for PureScale instance creation

Right now instance creation and maintainance in PureScale (db2icrt/db2iupdt) requires that the db2 instance user is local, i.e. has an entry in local /etc/passwd and /etc/shadow. This expose a huge problem for LDAP based environments like ours whe...
about 1 year ago in Db2 / Installation & Upgrade 0 Not under consideration

Lowering the limit for ACTIVITYTOTALTIME and UOWTOTALTIME

We should be able to trap the transaction that spent more than 10 seconds with a threshold. Can we change the low limit of the parameter ACTIVITYTOTALTIME and UOWTOTALTIME to allow a magnitude of milli second.
over 9 years ago in Db2 / Workload Management 0 Not under consideration

Mechanism to identify a workload and adjust memory values

Workloads can be different in a database, executed at different times. When the STMM is active, and a workload (let's say A) runs for several hours, then the memory will be fine adjuted for the workload at the end of the execution. However, for th...
about 3 years ago in Db2 / Workload Management 0 Not under consideration

event monitor tables (activity/actitivtystmt/activitymetrics) should support range partitioning

event monitor tables do not support range partitioning. In addition, you can not create expression based indexes on them. This makes them more difficult to manage and query. create event monitor wlm_activity_mon for activitieswrite to table activi...
over 5 years ago in Db2 / Monitoring 0 Not under consideration

Support for application-period temporal tables defined as CTE

Support for application-period temporal tables in CTEs. To be able to join Temporal Tables and temporal CTEs with a FOR BUSINESS_TIME clause.
over 6 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

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