IBM Data and AI Ideas Portal for Customers


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Replication: IMS / VSAM

Showing 105

Additional CDC monitoring feature

hi,As you know Classic CDC for IMS providing basic support. Nowadays it's important to monitor subscriptions' latencies, status or states for IMS side. It is posibble to monitor cdc for DB2 via API but we need same development for IMS. Before thi...
28 days ago in Replication: IMS / VSAM 1 Future consideration

Diff function for produce log records after VSAM files are REPROed

Many customers are using IDCAM REPRO to update/replace the whole VSAM file during a nightly batch job. The repro operation does not create records in the logstream. As a result, user has to perform REFRESH to resynchronize the target database. S...

Suppress DD-level accounting information in the SMF type 30 EXCP section for individual DDs.

We found that E-Private SP230 Key0 storage growth was occurred in IIDR Classc Capture service. It was due to SMF type 30 EXCP information at DD name dynamic allocation. Our case was 100 thousand DD Dynamic allocation for IMS OLDS open. . Then...
almost 2 years ago in Replication: IMS / VSAM  / Data Replication for IMS for z/OS 0 Future consideration

Limit maximum number of writer tasks that can be assigned per subscription

We had an incident where one subscription had monopolized most of the writer tasks which caused replication latency for the RMs of all the other subscriptions in that source/target server pair. Therefore, there should be a parm to set a limit for...
4 months ago in Replication: IMS / VSAM  / Data Replication for VSAM for z/OS 1 Future consideration

Provide attributes in conflict for message CECD1029E

Message CECD1029E only tells you that the attributes for the VSAM data set are different on the source and target servers. It doesn't tell you WHICH attribute it finds to be mis-matched. It would be more helpful in troubleshooting issues to kno...

Allow mapping of character fields > 254 Bytes in CDA

Currently Classic Data Architect (CDA) skips over any COBOL Copybook field greater than 254 Characters. It does not issue a warning or error it just skips the field and goes on to mapping the next field. This request will have CDA map character...

Classic IIDR server's STOP,ALL command process should enable the timeout function

In a customer's production environment STOP,ALL command was entered to a IMS target server but the termination process hung. After 80 minutes passed STOP,ALL,IMMEDIATE was entered and the server successfully terminated. (The incident is reported...
about 2 years ago in Replication: IMS / VSAM 0 Future consideration

High availability for IMS CDC in a SYSPLEX environment

We are currently implementing CDC for IMS in our Production environment. This consists of 2 IMS v15.2 systems running on 2 different LPAR's, in a SYSPLEX. The OS on both are currently z/OS 2.3. CDC for IMS runs on 1 LPAR, replicating the LOGS of b...
7 months ago in Replication: IMS / VSAM  / Classic Change Data Capture 2 Future consideration

CDC Record type 99 generation to be controlled externally

To generate IMS records for CDC, each DBD must be augmented by adding an EXIT parameter to each segment. This would require a DBDGEN an OLC. We need a command (type1/2) to be able disable and enable type 99 record creation against a database th...
about 3 years ago in Replication: IMS / VSAM 1 Not under consideration

Track completed UORs to improve conflict handling during a subscription's adaptive apply restart window

When a subscription is restarted, a conflict from the original failing UOR is ignored during the subscription's adaptive apply restart window, resulting in an erroneous, successful restart of the subscription. Because of the unknow state of the u...
almost 2 years ago in Replication: IMS / VSAM  / Data Replication for VSAM for z/OS 0 Future consideration