In some circumstances, the main transaction has been migrated to ART/IMS on Linux, while some sub-transactions still reside on z/OS, as they are shared by other main transactions residing on z/OS. This solution aims to enable applications in ART/IMS to invoke sub-transactions on z/OS without code changes, e.g. through Alternate PCB, referred to as ALTPCB hereinafter.

You can call an online transaction, referred to as main transaction hereinafter, provided by ARTIMS from 3270 terminal or a Tuxedo client through ARTIGW. To make the main transaction call a sub-transaction on z/OS, you need to follow these steps, which will be elaborated later:

• Step 1: Configuring Sub-transactions on Z/OS
• Step 2: Configuring and Deploying TMA SNA for IMS
• Step 3: Generating Buffer Converter Program for Sub-transactions

This chapter contains the following topics:

• Step 1: Configuring Sub-transactions on Z/OS
  
• Step 2: Configuring and Deploying TMA SNA for IMS
  
• Step 3: Generating Buffer Converter Program for Sub-transactions