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IMS Database Manager

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Increase OSAM subpools from current limit of 255 to 1024 or 2048

As our BMP workload increases coupled with recent mergers we are fast approaching the limit of 255 OSAM subpool buffers. In our environment we have seen a slow down in BMP processing when too many BMPs are accesssing the same OSAM subpool due to l...
over 10 years ago in IMS Database Manager / DLI 1 Not under consideration

Alter DEDB online without a two stage randomizer

We want to resize DEDBs databases online without using a two stage randomizer.
over 10 years ago in IMS Database Manager / Fast Path 1 Not under consideration

UOW LOCK MODE using has hash value

Now, UOW LOCK MODE user are using same hash value.As a result, False contention causes more than necessary, if multi processing are working on parallel.UOW Lock should use different hash value.This improvement will reduce false contention in case ...
over 10 years ago in IMS Database Manager / Fast Path 1 Not under consideration

Allow an implementation for DFSMS Media Manager parameter UPDATE=YES and CATOUTP=NO

We created a Marketing Requirement #MR0519105051 based on DFSMS Media Manager support team request. Title is "Allow IMSFP-DEDB ADS close without BCS access." So we need new implementation for DFSMS Media Manager parameter UPDATE=YES and CATOUTP=NO...
over 10 years ago in IMS Database Manager / Fast Path 1 Not under consideration

IMS support for WLM IWMCNTN (Contention notification service)

Customer sometimes suffers from very long response time of FP online transactions during heavy IMS BMP workload period.The reason for the delay on online transaction is lock contention. The lock holder is BMP regions.With WLM service class definit...
over 10 years ago in IMS Database Manager / Fast Path 1 Not under consideration

Please remove the latch requirement for DMB obtained during DB compression

We had some IMS BMP performance related issues that showed the more jobs we ran on an LPAR against the same database/partition the slower the jobs would run. Upon review of the IMS Monitor reports and IMS latching log records we noticed a rather s...
almost 11 years ago in IMS Database Manager / DLI 2 Not under consideration

DFSILTA0 utility Output compatibility between before V9 and after V10

Our customer upgraded IMS from V9 to V11 recently. IMS utility DFSILTA0 output increases after upgrading IMS from V9 to V11.There is a twice as many difference as this in the number of processed transactions on a SYSOUT message. And in the number ...
about 11 years ago in IMS Database Manager / Application Development 4 Not under consideration

HALDB ALTER for CI change only

V13 HALDB ALTER. I would like to be able to use the HALDB ALTER to change the DB CI size without having to make a DBD change as well. This will allow for DB tuning without down time for the application.
over 11 years ago in IMS Database Manager / General DB 2 Not under consideration

Automatic detection of current RRDS by RDDS Extraction utility. (old MR092111406 )

Customer would like to create a copy of the old IMSGEN macro based on the latest information contained in his IMS sistem and stored into DRD RDDS Data set; these will be used in case of problems to recover the subsystem.The IMS RDDS Extraction uti...
over 11 years ago in IMS Database Manager / General DB 4 Not under consideration

HALDB partition keys should not be deleted when changing from PARTSEL to HIKEY

When changing from PARTSEL to HIKEY any partition keys already defined in RECON should either generally be left as they are or there should at least be an option to determine whether they should be left or deleted.
over 11 years ago in IMS Database Manager / General DB 3 Not under consideration

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