IBM Data and AI Ideas Portal for Customers


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Db2 for z/OS

Showing 798

DB2 Deletion of Empty PBG Partitions with no UTUT access after switch phase

When removing empty partitions in a PBG tablespace after the switch phase of the reorg, the space is put into UTUT access, which causes -904 00C90082 to be returned to the application.
about 8 years ago in Db2 for z/OS 1 Not under consideration

Improve optimizers cost estimation when recursive table expression invloved

Please refer to case TS004038133. Application developer uses SQL EXPLAIN to compare the cost of different SQL statement and decides which one to use. In one case, they found EXPLAIN reported lower cost for one SQL than other but in actual executio...
about 4 years ago in Db2 for z/OS 1 Not under consideration

Mapping Z/OS Enclaves to DB2 Threads

We have an application running on Z/linux the application access DB2 on Z/OS through DDF. The application has few threads active in DB2 and we have ENCLAVE active in Z/OS we are trying to map which enclave belongs to which DB2 thread. If we can ge...
over 12 years ago in Db2 for z/OS 1 Not under consideration

IFCID 316 needs counter for tablespace scans on user tables only

Customers tool uses QW0316NT that is showen as tablespace scans. This counter does not only include scans on user tables but also on workfiles.. QW0316NT (or STAT_RSCN) intentionally includes scans of all workfiles... not only workfiles used for s...
over 12 years ago in Db2 for z/OS 1 Not under consideration

REORG DISCARD support writing a spanned record

Running a REORG DISCARD on a user tablespace with LONG VARCHAR message :- DSNU297I - COMPOSITE RECORD SIZE TOO LARGE FOR.......... is received.BTW, UNLOAD without 'NOPAD', the problem occur; whetheras, with 'NOPAD', the problem doesn't occur.
over 12 years ago in Db2 for z/OS 1 Not under consideration

DB2 trace accounting records constraint filter by contents

My customer needs to gather SMF101 performance record to obtain stored procedures performance metrics. This is very important for them in order to deploy a DB2 stored procedures in production so they can effectively troubleshoot performance issues...
over 12 years ago in Db2 for z/OS 1 Not under consideration

Add SORTNPSI_USED To SYSIBM.SYSINDEXSPACESTATS

Use case/business impact. All indexes reorged on Sunday. Run daily process to identify any index needing reorged by interrogating RTS. Since NPSI organization can rapidly deteriorate, on Monday, Tuesday, Wednesday, Thursday, and Fri...
about 4 years ago in Db2 for z/OS 1 Not under consideration

New pseudo-delete zparms

We've been told that pages trigger pseudo-delete cleanup when they become > 4% free entries. Please make this % a zparm. We would also like the calculation that triggers pseudo-delete cleanup to use another new zparm for the minimum # of entrie...
over 8 years ago in Db2 for z/OS 3 Not under consideration

Add View Support to temporal time tables

Add support for views to tables which contain both SYSTEM and BUSINESS TIME. For single table views, please limit restrictions on ISRT / UPDT so that the view can be utilized in much the same manner as any other view.
over 12 years ago in Db2 for z/OS 1 Not under consideration

Support Common Table Expression (CTE) in NTE

Today, the using of Common Table Expression (CTE) is limited only to the beginning of the select statement. There are many products, specially open source, but not only, that take every select statement and cover it by SELECT * from (nte). When ...
about 4 years ago in Db2 for z/OS 2 Not under consideration

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