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IBM Data and AI Ideas Portal for Customers

This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (

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Db2 for z/OS

Showing 901

Error message improvement when failing to convert tablespace to UTS PBG

Recently we are converting our old segmented and simple tablespaces to UTS PBG. When converting one of these tablespaces we got an abend and a DUMP showing reason code 00C90101. We opended a case (TS009249828) and analyzing the DUMP DB2 lab conclu...
about 1 year ago in Db2 for z/OS 0 Future consideration


Applications moving to the cloud have significantly increased the number of locations accessing Db2. Current limits within the -DISPLAY LOCATION command prevents the command from displaying all possible locations. This idea is to remove this limit...
4 months ago in Db2 for z/OS 0 Planned for future release

Improving Insert Performance for LOBs

As mentioned in Case TS004024647 there are some situations where inserts in lob structures do not provide the expected performance. Instead they cause massive CPU consumption in the Coupling Facility for the spacemap search. The problem is excessi...
over 2 years ago in Db2 for z/OS 0 Not under consideration

Enable DSNTIAUL to generate NUMRECS in the punchdataset

The UNLOAD using DSNUTILB generates the NUMRECS parameter which makes the Allocation of Sort/Workdatasets for the Load utility very effective. Because some collegues use IKJEFT01 (DSNTIAUL) for unloading data, we tried to use NUMRECS here also. Bu...
9 months ago in Db2 for z/OS 0 Not under consideration

enhance smf records for reporting secure connections

When just beginning to implement secure db2 ports (sometimes called encryption in-flight), it is helpful to report on the performance of queries that are secure vs queries that are non-secure. This can help us to fully tune our applications for th...
about 1 year ago in Db2 for z/OS 2 Future consideration

Improvements in online DDL changes - DBD design

Our company uses DB2 zOS almost exclusively for dynamic SQL workloads. Our management expects that DB2 zOS also has high availability regarding DDL changes in this application szenario. If you intend to perform DDL changes in this environment duri...
over 3 years ago in Db2 for z/OS 9 Not under consideration

-DIS STATS(ITC) - Retrofit PH51565 to DB2 v.12 (Fast Traversal Blocks)

We are collecting data from the -DIS STATS(ITC) command once every 15 minutes. We will use that data to help determine the best candidate indexes for fast traversal blocks. Currently under v.12 when you have INDEX_MEMORY_CONTROL set to SELECTED yo...
about 1 month ago in Db2 for z/OS 0 Under review

to determine that the element following the current element is an element in the tables being accessed and not a ‘rename’ and generate an error message

Currently, when compiling a Cobol program if a comma is missing from the second to last field in a SELECT the DB2 pre-compiler will not give an error because it treats the second table element as a 'rename' this creates problems because no error i...
about 1 month ago in Db2 for z/OS 0 Under review

Externalize high water marker for EDM pool in Db2 trace on Db2 V12

This stat is useful and required to tune EDM pool appropriately. This would be useful for DB2 systems programmer and DB2 Performance Teams. We had a case opened and the decision is to externalize this feature only with v13. It would be great to ha...
2 months ago in Db2 for z/OS 0 Under review


Hello Db2 for Z/OS Development. Apar PM89016 was created several years ago to implement the lock avoidance for singleton SELECTs with ISO(CS) and CD(YES) when R-scan is used, or the index that is chosen has matching predicates on all columns of th...
over 2 years ago in Db2 for z/OS 1 Not under consideration