Oracle Tuxedo Application Runtime for IMS Release Notes

This chapter contains the following topics:

•	About Oracle Tuxedo Application Runtime for IMS

•	Key Features and Components

•	What's New in This Release

•	Interoperability

•	Dependencies

•	Platform Support

•	Limitations and Known Issues

About Oracle Tuxedo Application Runtime for IMS

Oracle Tuxedo Application Runtime for IMS (Tuxedo ART for IMS) supports quick migration of IBM IMS applications from mainframe to Oracle Tuxedo with low risk. It provides a combination of APIs, tools, and services that allows both online and batch IMS applications to run unchanged, preserving years of investment in IMS business logic and data. It protects application users from change by supporting standard 3270 terminal emulators. It also supports familiar APIs and functions that developers use in their mainframe applications. The result is the ability to quickly and with low risk migrate legacy COBOL and C/C++ mainframe applications to open systems running Oracle Tuxedo. This provides substantial cost savings, elastic scalability, and greater flexibility.

Key Features and Components

Oracle Tuxedo Application Runtime for IMS provides:

•	Support for DL/I functions that can be called by COBOL and C programs migrated from mainframe.

•	Session management based on Oracle Tuxedo to handle concurrent connections from tn3270 terminal emulators with support for IMS Message Format Service (MFS.)

•	An MPP execution environment to process transactions received from 3270 terminals, MQ-IMS bridge or via ATMI-IMS gateway by calling migrated COBOL/C programs.

•	A BMP execution environment to run messages queued from MPP or IMS batch programs submitted via batch jobs in ART for Batch.

•	A plug-in interface for partner-provided DLI-to-SQL bridge solutions that enable DLI calls from migrated COBOL/C programs to access IMS DB data migrated to relational database, Oracle or DB2.

•	An IMS ODBA proxy for remote access to IMS/DB data on the mainframe.

•	Access to GSAM databases migrated to local files.

What's New in This Release

Oracle Tuxedo Application Runtime for IMS 12c Release 2 (12.2.2) is certified to run on Oracle Tuxedo 12c Release 2 (12.2.2) and work with Oracle Tuxedo Application Rehosting Workbench 12c Release 2 (12.2.2) and Oracle Tuxedo Application Runtime for Batch 12c Release 2 (12.2.2).

Oracle Tuxedo Application Runtime for IMS 12c Release 2 (12.2.2) includes the following new features and enhancements:

•	Tool for automatic conversion of IMS PSBs and DBDs to ARTIMS format (imsgenconf)

•	Dynamic configuration reload and trace level control (imsadmin)

•	Performance analysis tool (imsperf)

•	Configurable reverse attach debugging (based on transid, program, and userid)

•	SYSIN/SYSOUT redirection for ACCEPT/DISPLAY statement using ARTEXTFH file handler

•	Idle timeout support for tn3270 sessions

•	Restartable BMP server that reloads after each program

•	Reconnect management for database or WMQ RMs when connection fails

•	Performance optimization settings for managing Micro Focus COBOL subsystem

•	Automatic COBOL dump generation when program abends

•	User controllable Tuxedo timeout for DFSRRC00, including unlimited setting

•	Ability to call IMS sub-transaction on z/OSthrough ALTPCB

Interoperability

Oracle Tuxedo ART for IMS maintains full interoperability with:

•	Oracle Tuxedo 12c Release 2 (12.2.2)

•	Oracle Tuxedo Application Runtime for Batch 12c Release 2 (12.2.2)

•	Oracle Tuxedo Application Runtime for CICS 12c Release 2 (12.2.2)

•	Oracle Tuxedo Application Rehosting Workbench 12c Release 2 (12.1.3 and 12.2.2)

•	Oracle Tuxedo System and Application Monitor Plus (TSAM Plus) 12c Release 2 (12.2.2)

•	Oracle Services Architecture Leveraging Tuxedo (SALT) 12c Release 2 (12.2.2)

•	3270/MFS support is compatible with standards-compliant tn3270 terminal emulators

•	MQ-IMS Bridge support is compatible with IBM WebSphere MQ 7.x

Dependencies

Oracle Tuxedo ART for IMS 12c Release 2 (12.2.2) installation requires Oracle Tuxedo 12c Release 2 (12.2.2) installation.

Platform Support

Oracle Tuxedo Application Runtime for IMS 12c Release 2 (12.2.2) supported platforms are listed in the Oracle Tuxedo Application Runtimes Installation Guide.

Limitations and Known Issues

Please note the following limitations in Oracle Tuxedo Application Runtime for IMS:

1.	Only one input message from a terminal is allowed in a single transaction.

2.	Cannot switch to a terminal other than the originator.

3.	Only Message formatting option 1 is supported.

4.	Cannot deploy IMS Region in Tuxedo MP cluster using heterogeneous machines.

5.	Does support IMS default system MOD - DFSMO2 which is used when MOD does not specify both in the application program and the MID "nxt" field. ARTIMS displays the output message as plain text in the terminal, users first need to clear the terminal.

6.	Due to byte ordering differences between "big endian" and "little endian" architectures, when using 'Dynamic Attribute Modification' in COBOL programs you cannot specify a decimal integer for attribute bytes. It is s suggested to specify a hexadecimal value one byte at a time in attribute bytes.

See Also

•	Oracle Tuxedo Application Runtimes Installation Guide

•	Oracle Tuxedo Application Runtime for IMS Users Guide

•	Oracle Tuxedo Application Runtime for IMS and Reference Guide