(ZOS) Enabling optimized local adapters support in IMS
The WebSphere Application Server for z/OS optimized local adapters support has Information Management System (IMS™)-specific installation and setup requirements. Use this task to prepare your IMS environment to make outbound calls to EJB applications deployed on the local WAS and to be the target of calls from applications that run on the Application Server.
If we need more information about IMS, see the IMS product information center.
Tasks
- Create an external subsystem IMS procilib member or update our existing member. Include the following entry in this new proclib member:WOLA,BBOA,BBOAIEMT
When this entry is activated, it results in a new external subsystem with the name WOLA defined to IMS. The language interface token is BBOA and the external subsystem table module is called BBOAIEMT. The name subsystem name, WOLA, can be changed to any four-character string, but the BBOA and BBOAIEMT cannot be changed. After activating the entry, when we issue the IMS /DISPLAY SUBSYS. command, we should see the WOLA subsystem and its current status.
- Pass the SSM parameter in your IMS startup data. The four-character string designates which IMS proclib member to use to start external subsystems such as DB2, IBM MQ, and WOLA, for example: SSM=WASZ. This four character string example instructs IMS to look for a member in its proclib with the name of <IMSID>WASZ, and to use that name to activate external subsystems in the current IMS environment. For more information about how to define external subsystems to IMS, reference the IMS Customization Guide.
- Make a copy of the optimized local adapters external modules data set and add it to your APF list and the IMS control region STEPLIB and DFSESL DDs. IBM recommends that we make a copy of the data set that was created using the copyZOS.sh script. Place the copy of the data set in the APF list and the IMS.STEPLIB and DFSESL.DD concatenations in your IMS JCL procedure. This data set contains the OLA IMS external subsystem interface exit modules.
The copyZOS.sh script is run when you activate the server environment to use optimized local adapters. See the topic, Enabling the server environment for optimized local adapters, for more information about the script.
- Add the optimized local adapters external modules data set to your Message Processing Region (MPR), fast path Region (IFP) or Batch Message Processing (BMP) JCL DFSESL concatenation. The external modules data set is created using the copyZOS.sh script.
- Set up security If we are using RACF, confirm that the job to define the CBIND class to RACF for the target WebSphere server has run.
In a non-RACF System Authorization Facility (SAF) environment, execute the equivalent commands or jobs that set up this support for the Independent Software Vendor (IVS) security product that we use.
See topic, Security considerations using optimized local adapters with IMS.
- Restart the IMS region after these changes are made. New optimized local adapters informational messages display on the IMS control region log indicating that the optimized local adapters external subsystem interface is started. Issue an nn,/DISPLAY SUBSYS WOLA. and ensure the status displays as CONN (connected).
We have activated support for the optimized local adapters so that the IMS applications can begin to register and make calls using the optimized local adapters APIs.
Related:
Security considerations using optimized local adapters with IMS Optimized local adapters for z/OS APIs Enable the server environment to use optimized local adapters Install the WebSphere BBOC, BBO$ and BBO# transactions in CICS Secure optimized local adapters for inbound support Use WLM with optimized local adapters WAS transactions BBOC, BBO$, BBO#