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Replication: IMS / VSAM

Showing 87

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 ...
over 3 years ago in Replication: IMS / VSAM  / Data Replication for VSAM for z/OS 1 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 o...
over 3 years ago in Replication: IMS / VSAM  / Classic Change Data Capture 2 Not under consideration

needs a solution for deadlock between multiple change streams

Please refer to the PMR 10350,69G,760----------------------------------------Customer would like to avoid a deadlock situations between multiple change streams when he started some subscriptions in test scenario of source server failure. Since IID...
almost 7 years ago in Replication: IMS / VSAM 1 Not under consideration

Allow CECD0015E to inform user where error was found

CECD0015E error message is cryptic at best. It does not allow the customer (user) to make any determination as to the cause of the error or the ability to fix the error. In order to currently fix the error, the user MUST contact IBM with JESLOG an...
over 7 years ago in Replication: IMS / VSAM 1 Not under consideration

Classic CDC needs to alert on Delete/Define operation on source VSAM file

when a delete/define operation occurs on a source vsam file which is enabled for replication (LOGREPLICATE), it puts the source and target data out of sync and hence may cause replication to break. A warning message (CEC*W) may be helpful for oper...
over 6 years ago in Replication: IMS / VSAM 0 Not under consideration

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...
about 3 years ago in Replication: IMS / VSAM 2 Future consideration

current IMS log reader TAPE contention behavior needs to be improved during change stream activation

Please refer to the PMR 02209,69G,760 and APAR PI71320 submitter page.--- start of the APAR quotation ---The current IMS log reader VTS contention behavior needs to be improved. Contention occurs when the IMS log reader attempts to access an archi...
almost 7 years ago in Replication: IMS / VSAM 1 Not under consideration

needs a quick detection solution about a connection loss without depending on TCP/IP

Please refer to the PMR 11064,69G,760.----------------------------------------Customer would like to detect a connection loss when HEARTBEATTIMEOUT=3M (3 minutes) is expired without depending on TCP/IP when the target server running LPAR is down.B...
almost 7 years ago in Replication: IMS / VSAM 1 Not under consideration

Improve Error Descriptions

Improve Error Descriptions Current error message are very generic and it is hard to understand what exactly the failure is looking at the logs Improve on the error reporting for users to understand the error without enabling traces to understand t...
almost 7 years ago in Replication: IMS / VSAM 1 Not under consideration

InfoSphere Data Replication for VSAM - request to remove the need of CICS

In some banking customers, OLTP server is pure IMS. They mix the use of IMS DB and VSAM files. The complete GDPS A-A solution need to replicate DB and VSAM to site 2. However, current VSAM replication need CICS been start in site 2 to apply change...
over 7 years ago in Replication: IMS / VSAM 1 Not under consideration

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