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IMS Transaction Manager

Showing 190

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.
over 5 years ago in IMS Transaction Manager / Open Access TM 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
about 11 years ago in IMS Transaction Manager / Message Queue Management 5 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...
over 5 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...
over 5 years ago in IMS Transaction Manager / Open Access TM 1 Is a defect

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...
over 8 years ago in IMS Transaction Manager / Open Access TM 1 Not under consideration

add MQMD_EXPIRY in DFSYDTx for MQ destination descriptor

Hello, we currently use DFSYDTx member in PROC lib to define MQ destination descriptor for IMS transaction to send out message to MQ queue, but there is no MQMD_EXPIRY parameter, we don't know how to set expiry time for the MQ message.
over 5 years ago in IMS Transaction Manager / Open Access TM 1 Not under consideration

Simplify the use of OTMA descriptors

PROCLIB member DFSYDTx follows the same rule as the ETO descriptor members DFSDSCMx using a one byte suffix. The value must match the SUFFIX= parameter of the IMSGEN system definition macro with the result that we can only create one DFSYDTx membe...
over 5 years ago in IMS Transaction Manager / Open Access TM 1 Not under consideration

IMS output message flood control

IMS has already a flood control for input messages. This covers the most common cases of message flooding in IMS. Even if mass insertion of output messages is very unusual, it is as ciritical to the system stability as mass insertion of input mess...
about 6 years ago in IMS Transaction Manager / Message Queue Management 2 Not under consideration

IFI0410-1326 Loss of transactions in IMS after a DB2 abend until reconnect to DB2

SUBMITTER SECTIONSubmitted by: scherwajSubmitters Company: Finanz Informatik PUBLICRequirement Number and Title: IFI0410-1326 Loss of transactions in IMS after a DB2 abend until reconnect to DB2Homework Assigned: NoRequirement Category: Informatio...
over 9 years ago in IMS Transaction Manager / General TM 3 Not under consideration

IMS AMS - Advanced Message Service

Implement IMS functionality to support MQ Series Advanced Message Services (AMS) for transactions using the IMS-bridge connection.IMS applications are already today able explore this functionality if the design is to use MQ explicit access to the ...
over 6 years ago in IMS Transaction Manager / Message Queue Management 1 Not under consideration

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