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Hi,
Thank you for your interest in keeping IMS a vital and successful product. Software development has continuously evolved during IMS's lifetime, and so has IMS itself. We have kept pace with, adopted, and implemented many industry standard best practices within our organization, including Continuous Delivery, Design Thinking, and Agile.
When choosing new features to add from the list of requirements in our backlog, we assess which will bring the most value to as many clients as possible and prioritize those.
At this time, after reviewing this request for enhancement and assessing its potential value, we have decided to reject it. The reason we are rejecting this item is there are several viable alternatives. Here are a few:
Method 1: Stop Tmember
1. Client sends ResumeTpipe wait forever request to ICON.
2. Issue /STO TMEM HWS1 TPIPE CLIENT01 command.
3. OTMA sends suspend tpipe protocol message to ICON.
4. ICON sends rc=8 rsn=SUSPTPIP (non-TMRA rsn 82) to client and closes the connection.
Reason code SUSPTPIP (82) indicates "IMS suspended the tpipe as a result of a /STO TMEMBER TPIPE command".
With tpipe CLIENT01 stopped, if client CLIENT01 issues another ResumeTpipe request on a new connection to ICON/OTMA, OTMA will send sense code x0028 rsn code x0001 back to the client.
Sense code x0028 rsn code x0001 indicates IMS rejecte the ResumeTpipe request because the tpipe is stopped.
Method 2: Stop OTMA
1. Client sends ResumeTpipe wait forever request to ICON.
2. Issue /STO OTMA command.
3. OTMA notifies ICON that it is stopped.
4. ICON sends rc=44 rsn=255 to client and keeps client connection open in RECV state.
Return code 44 indicates "The DATASTORE is no longer available". Reason code 255 is the timer value wait forever.
With OTMA stopped, if client issues another ResumeTpipe request to ICON/OTMA, ICON will send rc=4 rsn=STP/CLSE back to the client.
Method 3: Shutdown IMS
1. Client sends ResumeTpipe wait forever request to ICON.
2. Issue /CHE FREEZE command to shut down IMS.
3. OTMA notifies ICON that it is stopped/shutting down.
4. ICON sends rc=44 rsn=255 to client and keeps client connection open in RECV state.
Return code 44 indicates "The DATASTORE is no longer available". Reason code 255 is the timer value wait forever.
With IMS stopped, if client issues another ResumeTpipe request to ICON/OTMA, ICON will send rc=4 rsn=STP/CLSE back to the client.
We appreciate your input to IMS, and we hope that you will continue to submit ideas for improvements as customer feedback is a key component to shaping the future direction of IMS.
Thank you.