IBM Data and AI Ideas Portal for Customers


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Db2 for z/OS

Showing 788

Modify the way WLM adjust the Bufferpools size With AUTOSIZE=YES for Bufferpools

With AUTOSIZE=YES for BP's, WLM adjust automatically the size of BP but since that moment the size of BP's is "increasing continously". WLM recommends increasing or decreasing the size of the buffer pool based on the hit ratio but we have observed...
almost 6 years ago in Db2 for z/OS 1 Not under consideration

Altering table with a CLONE disruption

Currently, when altering a table with a CLONE on it, the clone needs to be dropped and to add it back the following procedure must be followed:1) REORG the tablespace 2) run MODIFY RECOVERY TABLESPACE DSNUM ALL DELETE AGE (*) 3) run an image copy ...
about 6 years ago in Db2 for z/OS 0 Not under consideration

432 VLDB - Reorg to Over-ride/ignore parms

We reorg a list of Tablespaces with a template and use STACK=YES. If a tablespace has an underlying LOB the reorg is abended. The requirement is to not have the REORG abend if the parameters are valid for the base table. SUGGESTION: We would like ...
over 6 years ago in Db2 for z/OS 1 Not under consideration

LOCK1-Structure

By drop database with many objects (TS,IX,Part) and a lot of statistic data, it can happen that the Lock1 structure gets full. Other possible reasons for LOCK1-Structure full conditions during DDL (DROP): - Object has to many entries in SYSIBM.SYS...
over 6 years ago in Db2 for z/OS 1 Not under consideration

Improve the RTS collections when mass deletes are taking place.

Improve the collection and externalization of RTS especially on objects involved with mass delete operations. Please see the PRM for additional information. 91244,122,000
over 6 years ago in Db2 for z/OS 1 Not under consideration

Allow non-intrusive RENAME of Constraint Names

Allow for a non-intrusive RENAME of any type of CONSTRAINT name. Primary Key, Foreign Key, CHECK and UNIQUE Constraint names should be available for RENAME. Currently, changing Constraint names requires the Constraint to be dropped and re-created ...
over 6 years ago in Db2 for z/OS 1 Not under consideration

Add the column name to sqlcode -407

When there are many columns in the sql and there are many rows that affected by the sql, it is very difficult to found the problematic column.For example, if it is an INSERT statement with fullselect, or UPDATE statement that update many rows with...
over 6 years ago in Db2 for z/OS 0 Not under consideration

Copytocopy utility runs in parallel

BdB does a flashcopy from one tablespace (one copy for each partition), and they need to do a COPYTOCOPY. Today we use another DB2 utility vendor and it has an option to do parallel copies.We tried to run IBM DB2 Utility, but we didn't find an par...
over 6 years ago in Db2 for z/OS 1 Not under consideration

CHECK DATA for informational referential constraints

We use informational referential constraints, i.e. foreign keys defined as NOT ENFORCED for some relationships between tables. When running the CHECK DATA utility for a table with foreign keys defined as NOT ENFORCED the foreign keys are not check...
over 6 years ago in Db2 for z/OS 1 Not under consideration

Missing "DROP PERIOD" possibility

Regular there is a request that we have to read certain data in a consistent state (e.g. likewise moving customer data from one DB2 environment to another) even while concurrent workload is still active and running in parallel against the same set...
about 7 years ago in Db2 for z/OS 0 Not under consideration

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