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IMS Transaction Manager

Showing 195

Reduce IMS ECSA Consumption when using DC Mon on busy systems.

When DC Monitor is started for the first time on a busy IMS system, we observe ECSA growth of several MB, which is not released when DC Monitor is stopped.
over 2 years ago in IMS Transaction Manager / General TM 1 Not under consideration

Dynamic calculation of YTIB and TPIPE limits according storage available

IMS should enhancement the TPIPEs and YTIBs blocks allocation, calculating dynamically the limit to be created according the amount of extended private available. This could be by client choice, for example, setting a parameter MAXTP=MAX instead M...
over 5 years ago in IMS Transaction Manager / Terminal Management 1 Not under consideration

Make the SHUTDWN parameter of MSGQUEUE macro overridable

Make the SHUTDWN parameter of the MSGQUEUE macro overridable with a new parameter in the DFSPBxxx proclib member or in any other proclib member
over 8 years ago in IMS Transaction Manager / Message Queue Management 1 Not under consideration

A dynamic PRELOAD in dependant IMS region

Hi, For a Message Processing Region or Fast Path Region, it is possible to enable PRELOAD with a list of modules specified in a DFSMPLxx member of the IMS PROCLIB. To maintain a such static list in DFSMPLxx member is quit a heavy task. If it will ...
over 5 years ago in IMS Transaction Manager / Application Enablement 1 Not under consideration

Issue informational message when QBUFMAX parameter was reached

Customer faced two hung situations where QBUFMAX parameter was reached. They would like to receive a message when this parameter was reached and also if, during initialization the QBUFMAX value is the same as QBUF specification
over 11 years ago in IMS Transaction Manager / Message Queue Management 5 Not under consideration

Provide a way to reset the RM Program Resource from other than the owning IMS

We need to reset the RM Program Resource by command, from other IMS than the owning IMS, to release a program that is held by a failed IMS.
almost 6 years ago in IMS Transaction Manager / Application Enablement 1 Not under consideration

IMS SINGLE TCB per TMEMBER BOTTLENECK

The current IMS design has a single TCB per TMEMBER, resulting in bottlenecks once transaction volume approaches the critical limit (which is unknown at this time). While IMS performance testing has shown IMS can handle 100K trxs per second, the b...
almost 9 years ago in IMS Transaction Manager / Open Access TM 1 Not under consideration

Moving LSAVs into OTMA ITASK block itself for removing any storage management overhead

Add the 20 save areas into the main OTMA ITASK block DSECT, for example DFSYQAB. Get the one block, chain its save areas together, and then pass SA1 to DFSCIR. This will get rid of LSAVs and the DFSBCB GET for save areas all together.
almost 6 years ago in IMS Transaction Manager / Open Access TM 1 Not under consideration

Locked data due to failure in DB2 thread deallocation in MPP abend

On transaction abends additional failures can occur that prevent deallocation of the DB2 threads. DB2 data may remain locked until the problem is noticed and the thread is cancelled or the MPP region recycled.When IMS fails to deallocate the DB2 t...
almost 6 years ago in IMS Transaction Manager / General TM 1 Not under consideration

Optimization of IMS Connect processing with multi-segmented response messages

XCF does not send guarantee that the message segments (commit mode 1) will arrive in the same order that they were sent. For multiple output segments it is up to the XCF receiver - IMS Connect - to order the received segments and make sure they ar...
almost 6 years ago in IMS Transaction Manager / Open Access TM 1 Is a defect

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