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Db2 for z/OS

Showing 91

DB2 Catalog and INDEX COMPRESSION statistics (PAGESAVE and BP_UNUSED)

If an index is compressed, it is documented in DB2 catalog table SYSIBM.SYSINDEXES column called ‘COMPRESS’ Tablespace compression is documented in SYSTABLESPACE and SYSTABLEPART. In both tables with column called ‘COMPRESS’ SYSTABLEPART also co...
over 5 years ago in Db2 for z/OS 8 Future consideration

proactive messages of objects ??% full or 'follow-up objects free space' function inside Db2

Follow up TS and XS limits in Db2 z/OS is not an easy job. The last 6 months, we coped issues with partitioned indexes full. This were partitioned bases 'temporarily session' tables for applications, whereby the not active partition is cleaned up ...
almost 2 years ago in Db2 for z/OS 0 Future consideration

DISPLAY EARLY CODE command

Good to know what the level of of the DB2 early code. IBM currently make viewing the early code level far more difficult than it needs to be.
almost 2 years ago in Db2 for z/OS 0 Future consideration

Update DB2 (DDF) to use a stronger Hash Algorithm in the DDF global authentication cache feature

Presently, DB2 DDF is using MD5 Hashing in the DDF global authentication cache feature. This hashing cipher is long considered weak and guidance is that it should no longer be used. We ask IBM to consider a change to DB2 to up level this feature t...
about 1 year ago in Db2 for z/OS 0 Future consideration

Online change of indexes

We would like to be able to alter indexes as an online change, regardless of whether it is a duplicate index or a unique index (in the latter case it will often be the addition of include columns). We often have changes to indexes in connection wi...
8 months ago in Db2 for z/OS 1 Future consideration

Add REMARKS column to SYSIBM.SYSDATABASE and COMMENT support for database object

We would like to ask you, to add the REMARKS column in SYSIBM.SYSDATABASE and support for COMMENT statement for databases. There is no possibility currently to store some form of a description for databases in DB2 catalog. In big sites where thous...
over 3 years ago in Db2 for z/OS 0 Future consideration

Improvement of FlashCopy Load on a PBR

When loading with LOG NO a PBR at tablespace level, all partitions will be copied by FlashCopy and not only the ones that were updated. But when FLASHCOPY NO is specified, only the partitions that were update will get COPY PENDING flag. The FlashC...
about 1 year ago in Db2 for z/OS 3 Future consideration

RID problem instrumentation improvement

The IFI 2 & 3 fields QISTRLLM and QISTRPLM and the RID fields in the 316 and 401 are all basically “useless” these days to actually detect a RID related limit problem. I know that the QXRFMIAP is available in the IFI 2 & 3 but it is needed...
over 1 year ago in Db2 for z/OS 0 Future consideration

There should be a table like SYSUTILITIES that contains Db2 Commands that have been issued

There should be a table like SYSUTILITIES , say SYSCOMMANDS, that contains Db2 Commands that have been issued, including the full text of the Db2 command that was issued.
almost 2 years ago in Db2 for z/OS 1 Future consideration

Remove the limit on the number of secondary IDs

The documentation states: If RACF is active and the “list of groups” option is active, the routine sets the list of Db2 secondary IDs to the list of group names to which the RACF user ID is connected. The maximum number of groups is 1012. Since RA...
5 months ago in Db2 for z/OS 0 Future consideration