IMS 15 Transaction Manager continuous delivery functions
IMS 15 Transaction Manager functions are delivered using PTFs as part of the IMS continuous delivery enhancement process and allow you to use new enhancements faster and more frequently.
| Function description | APAR, PTF, and release date | IMS version | Applicable for batch environments? | IMS Tools |
|---|---|---|---|---|
| OTMA checkpoint statistics enhancement Two new x'45' statistic record subtypes are added, one for Global OTMA information (x'451A') and one for OTMA Member information (x'451B’). This provides an easier way to track OTMA statistics to aid in fine-tuning the system. |
PH45589/UI93202 October 2023 |
15.1 and later | No |
|
| IMS ALTPCB enhancement for IMS Connect IMS introduces a new function, SENDALTP, for IMS Connect customers to obtain an ALTPCB output without issuing Resume TPIPE calls. When IMS receives a commit-then-send send-receive call from IMS Connect, an ALTPCB output triggered by the input transaction can be sent back to the initiating IMS Connect client by using the input TPIPE name. |
PH39434/UI83360, PH39438/UI83364 November 2022 |
15.1 and later | No | Not impacted |
| 31-bit COBOL and 64-bit Java interoperability You can enable interoperability between 31-bit COBOL code and 64-bit Java™™ code by adding value JVM=3164 to an IMS dependent region's parameter list, installing required software, and configuring the dependent region. Supported dependent region types include MPR, BMP, IFP, JBP, and JMP. |
PH37140/UI78199 November 2021 |
15.1 and later | No | Not impacted |
| Static VTAM transaction output security enhancement Static VTAM® terminals are enhanced with the ability to apply transaction output security checks to prevent unauthorized accesses from different users to transaction outputs. With this enhancement, you can enable output security for static VTAM terminals by specifying an optional parameter STATICOUTSEC in the DFSDCxxx member of the IMS PROCLIB data set. |
PH24997/UI70314, UI70315 July 2020 |
15.1 and later | No | Not impacted |
| OTMA lightweight transaction pipe enhancement The OTMA lightweight transaction pipe enhancement improves the flood control of OTMA transaction pipes (tpipes). By using the OTMA lightweight tpipe function, IMS reduces the storage for each tpipe by dynamically allocating the associated ITASKs and other tpipe related storage only when they are needed. |
PH17832/UI68699, UI68700 April 2020 |
15.1 and later | No | Not impacted |
| Enhancement for the processing of OTMA commit-then-send messages in shared-queues environments A new OTMA ITASK DFSYDAD0 is created through OID TCB to separately process OTMA commit-then-send back-end messages in a shared queues environment. As a result, the main OTMA ITASK DFSYMOM0 can focus on other important jobs. |
PH02371/UI65336 September 2019 |
15.1 and later | No | Not impacted |
| MFS sign-on format support for RACF password phrases You can use MFS for RACF® password phrases that are up to 100 characters long and that are submitted from 3270 and SLU 2 devices through DFS3649A or DFS3656A. |
PH09313/UI64359, UI64360 July 2019 |
15.1 and later | No |
IMS Extended Terminal Option Support 3.2: PH14600/UI64580 Others: Not impacted |
| OTMA ACEE flood control enhancement With this enhancement, you can enable OTMA ACEE flood control in the DFSOTMA descriptor of the DFSYDTx member of the IMS PROCLIB data set. When enabled, you limit the number of RACF user IDs, which in turn limits the number of ACEEs that are cached by OTMA and prevents virtual storage in the IMS control region from running out. |
PI81171/UI62316, UI62317 April 2019 |
15.1 and later | No | Not impacted |
| Reduce LUMP storage for OTMA commit-then-send messages enhancement OTMA is enhanced to reduce the amount of storage that is allocated in LU 6.2 device manager private buffer pools and OTMA for commit-then-send (CM0) I/O PCB output messages. |
PH00002/UI62030 March 2019 |
15.1 and later | No | Not impacted |
| OTMA conversational transaction timeout enhancement You can configure IMS Open Transaction Manager Access (OTMA) to end conversational transactions and remove from storage the control blocks associated with those transactions if the transaction is inactive for a specified period of time. |
PI94954/UI61211 February 2019 |
15.1 and later | No | Not impacted |
|
Tpipe processing You can split OTMA client's ACK/NAK messages to a new IMS ITASK to avoid delay for tpipe processing. |
PI96089/UI57596 August 2018 |
15.1 and later | No | Not impacted |
| OTMA transaction pipe cleanup enhancement An OTMA tpipe is deleted after it has been idle across three consecutive system checkpoints, even if other tpipes associated with the same tmember are being used. Consequently, idle OTMA tpipes are made available more quickly to process subsequent transactions on the IMS message queue, and IMS storage space is less likely to become flooded. |
PI88409/UI54735, UI54736 April 2018 |
15.1 and later | No | Not impacted |
|
IMS ICAL processing IMS ICAL processing for synchronous program switch needs to support the DFSMSCE0 exit for workload router processing. |
PI82826/UI52624 January 2018 |
15.1 and later | No | Not impacted |