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Db2 for z/OS

Showing 953

Provide a default PLAN_TABLE and DSN_STATEMENT_CACHE_TABLE

If we use the CURRENT EXPLAIN MODE special register more widely, we have to create either a PLAN_TABLE and a DSN_STATEMENT_CACHE_TABLE or an ALIAS for each user. If we forget it, it doesn't work. So if there would be a default table for both, all ...
over 10 years ago in Db2 for z/OS 0 Not under consideration

Delay the insert into PLAN_TABLE, if EXPLAIN MODE is YES

We want to use SET CURRENT EXPLAIN MODE = YES in long running jobs like DSNTIAUL or DSNTEP2 to get more information, what was going on. If these jobs only ran select-statements a long running UOR is generated, because the insert of the access path...
over 10 years ago in Db2 for z/OS 0 Not under consideration

Easier management of DB2 for z/OS DSNWLMJ java environment parameters

I have a suggestion for the file created by DSNTIJMV step DSNTIJJ. The JAVAENV file is created as a separate flat file for each ssidWLMJ job created. If this was a PDS named DSN!!0.JAVAENV(DSNWLMJ), one file would contain all the java environment ...
over 10 years ago in Db2 for z/OS 1 Not under consideration

Identify a more representative selectivity for common predicates

Our queries have predicates that many queries share in common where the default selectivity is significantly outside the range of what ever actually occurs. This results in poor and/or unstable query performance. For common predicates with high un...
over 10 years ago in Db2 for z/OS 1 Not under consideration

Allow 3 different options for statement concentration.

We would like 3 options for statement concentration. It is importantthat all three options are available. 1. No concentration. (already exists) 2. Concentrate queries that have no parameter markers (Current DB2 concentration) 3. Concentrate querie...
over 10 years ago in Db2 for z/OS 1 Not under consideration

force a timeout of threads that are holding latches for a specified period of time

Due to HW failure a thread was 'hanging' in db2 system holding a latch. Db2 system will remain in that status for ever. We were not able to identify the thread, and it was not possible to cancel the thread externally. Are looking for Db2 to 'timeo...
over 10 years ago in Db2 for z/OS 1 Not under consideration

Add the SECTNO value to any IFCIDS currently containing STMTNO information, ideally the IFCIDS 53/58/59/60/61/64/65/66

Add the SECTNO (SYSPACKSTMT) value to any IFCIDS currently containing STMTNO information, ideally the IFCIDS 53/58/59/60/61/64/65/66, minimally the 53/58. Without this information it is difficult for Strobe to match up the SQL statement that is be...
over 10 years ago in Db2 for z/OS 1 Not under consideration

Increase the limit of 100 ckpts entries in BSDS

BACKOUT YES specifies the recovery of objects to a prior point in time by a log-only backout. No image copy is restored, it uses the log to backout changes made since the log point that is specified in the TOLOGPOINT or TORBA options. So we sugges...
almost 11 years ago in Db2 for z/OS 1 Not under consideration

Display severity code in DSNUxxxxI message

DB2 only provides highest return code at then end of job, often we need to review the output of the reorg jobs to find out abnormal activities. Is it possible to display the seveirty code along with the current text for each DSNUxxxxI message ? Th...
almost 11 years ago in Db2 for z/OS 1 Not under consideration

IFCID 172/196 (Deadlock/Timeout) – Add STCK for Held Locks

At IFCID 172/196 (Deadlock/Timestamp) please add a STCK for the held lock (blocker) when the lock was granted. In case of a lockout with this STCK the sequence of the locks, and so the sequence of the blocker-SQLs, can be reconstructed ‘post mor...
almost 11 years ago in Db2 for z/OS 1 Not under consideration

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