IBM Data and AI Ideas Portal for Customers


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Db2 for z/OS

Showing 997

Adding userid and timestamp info in Database exception table (DBET)

When an objects goes to a pending status or STOP status due to unplanned / unexpected activity, it is difficult to identify who /when the object went to that restrictive status.Already the DBET will be storing information when an object goes to ST...
almost 2 years ago in Db2 for z/OS 0 Future consideration

Dynamic Plan Stability - Option to restabilize an invalidated query missing

We've got several SQL queries stabilized with dynamic plan stability. Reason is to prevent them from getting a bad accesspath. After operations like "ALTER TABLE ... ROTATE PARTITION..." the query is flagged to valid N in SYSIBM.SYSDYNQRY. Than we...
almost 5 years ago in Db2 for z/OS 0 Not under consideration

ARCRETN separation for copy1 and 2

We control the archive log retention for our shop using the ARCRETN zparm which controls both logcopy1 and locopy2. We would like the ability to control these independently as we have application data requirements to retain data for longer periods...
almost 7 years ago in Db2 for z/OS 1 Not under consideration

Modify the DSNJU003 utility to allow it to define anything stored in the Db2 BSDS

When creating and new Db2 member, we must bring it all the way up before we can create the bufferpools, size them, and set the thresholds. We would like the ability to defined them prior to starting the Db2 member/subsystem. When creating an alias...
almost 3 years ago in Db2 for z/OS 1 Not under consideration

Control of Locksize and Maxpartitions for implicitly defined tablespaces.

We must be able to control parameters like locksize and maxpartitions on implicitly defined tablespaces.In DB2 V12R1M504 multi table tablespaces are deprecated, so we need to use implicitly defined tablespaces for QMF useres. Today we use segmente...
over 5 years ago in Db2 for z/OS 2 Future consideration

Allow for "OPTIMIZE FOR n ROWS" to be added to DELETE, UPDATE Statements

OPTIMIZE FOR 1 ROW can be added to SELECT SQL. One reason may be to influence the optimizer to chose one index over another, or to not perform a SORT with List Prefetch Adding OPTIMIZE FOR 1 ROW to a DELETE statement results in an error: EXPLAIN A...
over 3 years ago in Db2 for z/OS 1 Not under consideration

IFCID amendment to include SQL Text

Currently the ifcid 366 and 376 do not always supply the SQL text, but rely on the explain statement cache to supply it. This means SMF extracts rarely supply the SQL text required for these records.
over 6 years ago in Db2 for z/OS 1 Not under consideration

Add commit frequency to Modify Recovery utility

If there a numerous rows in SYSCOPY to be modified out the modify job holds locks on SYSCOPY for an extended period of time and can cause timeouts for other processes and utilities that are using SYSCOPY
over 5 years ago in Db2 for z/OS 1 Not under consideration

Pseudo IFCID 316

When using REOPT(ALWAYS) on a batch package to deliberately avoid filling the Dynamic Statement Cache (DSC) the SQL is, correctly, not inserted into the DSC and is not exrternalized by an IFCID 316. However this then "hides" the workload from moni...
about 9 years ago in Db2 for z/OS 1 Not under consideration

DSNTIAUL should support input LRECL size of > 80 bytes and not ignore input beyond the first 72 bytes

It is sometimes easy to put SQL all on one record as long as the LRECL of that record is very large. It becomes difficult to parse that SQL so it is divided into 72 byte records. Currently, the IBM utilities have input files that can have a LRECL ...
over 5 years ago in Db2 for z/OS 1 Not under consideration

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