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Db2 for z/OS

Showing 841

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...
about 2 years ago in Db2 for z/OS 0 Future 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...
about 4 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.
almost 4 years ago in Db2 for z/OS 1 Future consideration

need SQL tuning component

Now, we are using DSM to manage 235 sets of Db2 databases, of which SQL tuning is a more commonly used function for our system administrators and DBAs. We often use the SQL tuning function to optimize the SQL statements running in the production e...
about 2 years ago in Db2 for z/OS 0 Future consideration


Please reference CASE TS005056787 ( Temporal Table access path in Plan_Table does not match dynamic explain). This bind option which is set for using a Temporal Timestamp Register was set with a DEFAULT to YES by IBM for all binds that exclude thi...
12 months ago in Db2 for z/OS 1 Not under consideration

Provide Db2 utility messages regarding the usage (or not) of the Large Block Interface

The Large Block Interface (LBI) provided by z/OS can be used by Db2 utilities (such as COPY) to greatly reduce the utility runtime of when creating data sets on tape devices. The LBI must first be enabled through the DEVSUPxx member of SYS1.PARMLI...
7 months ago in Db2 for z/OS 0 Future consideration

FL LEVEL support

In Db2 12 the Functional Level is currently *not* externalized in various places where it most definitely should be. Notably the PLAN_TABLE, IFCID 316 and IFCID 401. If you are attempting tuning you *must* know under which FL level the SQL in ques...
over 4 years ago in Db2 for z/OS 0 Future consideration

Command confirmation in joblog of DB2MSTR.

DB2 has many commands which display or alter the status of something. There are a lot of distinct environments from which the commands can be executed (z/OS console, DSN session, TSO DSN command processor, IMS or CICS terminal, special STPs, IFI-i...
over 9 years ago in Db2 for z/OS 1 Not under consideration

Process PBG same as non-UTS Segmented When Using LISTDEF

When using LISTDEF with “PARTLEVEL 0”, partitioned by growth tablespaces which were converted from non-partitioned segmented tablespaces are no longer being considered as part of the result set. In order to maintain the same result list I would li...
5 months ago in Db2 for z/OS 1 Not under consideration


After RACF EXIT is abending and failing , DB2 is changing back to Native DB2 Auth checking , If you migrated to RACF exit this can lead to unwanted behavior , we would want a ZPARM or OPTION to make DB2 shutdown if the RACF EXIT is not wokring
over 3 years ago in Db2 for z/OS 1 Functionality already exists