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Db2 for z/OS

Showing 810

Eliminate IN list limitation of 32767.

Our organization has a major customer that has run up against this limitation. They have migrated from DB2 LUW and they did not have this limitation. They have IN lists that exceed 100k at times.
7 months 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: EXPLA...
7 months ago in Db2 for z/OS 1 Not under consideration

Reorging a TS with NPSIs, SORT NPSI = AUTO, getting IGD17272I VOLUME SELECTION HAS FAILED FOR INSUFFICIENT SPACE FOR which resulted in DSNU3341I 171 01:39:59.85 DSNURPCT - CANNOT ALLOCATE SORT DATASETS WITHIN 255 LIMIT , REORG should change to SORTNPSI = NO to prevent abend

Reorg TS with NPSIs and SORTNPSI or zparm REORG_PART_SORT_NPSI = AUTO. Reorg decides to run with SORTNPSI YES which sorts all keys for NPSIs. Job is having issues getting DASD resulting in numerous:01.39.58 J0916868 IGD17272I VOLUME SELECTION H...
7 months ago in Db2 for z/OS 1 Not under consideration

QUIESCE utility: Add the functionality described in the REORG drain-spec to the QUIESCE utility

Currently the QUIESCE utility has no capability to mitigate its impact on end user application workloads like the REORG utility does via its drain-spec functionality.
8 months ago in Db2 for z/OS 0 Future consideration

EXPLAIN PACKAGE - Populate all EXPLAIN tables

EXPLAIN PACKAGE only populates the PLAN_TABLE It should allow for the population of explain tables
8 months ago in Db2 for z/OS 1 Not under consideration

Distributed Thread cancelled due to Idle Thread Timeout or MONITOR IDLE THREADS not writing record to SYS1.LOGREC

We noticed that every DB2 distributed thread that is cancelled because: 1) Idle thread timeout value that is specified by Db2 subsystem parameter IDTHTOIN in macro DSN6FAC is exceeded; or 2) ATTRIBUTE2 value in a row with KEYWORD value MONITOR...
8 months ago in Db2 for z/OS 1 Not under consideration

No Implicit Runstats when running Reorg that materializes pending DDL

When a REORG is run to materialize a pending DDL change, the REORG enforces an inline statistics (RUNSTATS) even though no statistics keywork is added to the REORG statement/card. it defaults to TABLE(ALL) INDEX(ALL).This obviously can impact acce...
8 months ago in Db2 for z/OS 0 Future consideration

Return SQL error when DBA attempts ALTER DDL with both pending and immediate changes, instead of returning "0" and "losing" a change.

We recently opened an SR TS005591497 with support when we found that an ALTER to a LOB tablespace specifying both PRIQTY and COMPRESS returned SQLCODE 0, but the PRIQTY was "lost".IBM support pointed out the following:
8 months ago in Db2 for z/OS 1 Is a defect

DB2MSTR could issue a message at startup when there is an APF library problem instead of making an abend S0C4 in DSNYASCP

Sometimes we are having changes in APF libraries and if one or more libraries are not authorized, the MSTR address space will fail with an abend S0C4 in module DSNYASCPAn informative message providing the name(s) of APF libraries causing problem w...
8 months ago in Db2 for z/OS 1 Not under 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...
8 months ago in Db2 for z/OS 1 Not under consideration