CICS Transaction Gateway V5 The WebSphere ... - IBM Redbooks

10.2.4 Installing the CICS ECI resource adapter
This section describes the steps necessary to prepare for the use of the CICS
ECI resource adapter with WebSphere Application Server. It consists of the
following steps:
► CICS TG considerations
► CICS TS considerations
► Installation of the CICS ECI resource adapters
CICS TG considerations
Since the CICS ECI resource adapter uses the functions of the CICS TG to
connect to CICS, you will need to ensure the CICS TG environment is fully
working before it can be used by WebSphere for z/OS. However, you do not need
to start the Gateway daemon, since WebSphere will use the CICS TG in local
mode, whereby all the CICS TG Java classes are executed within the
WebSphere address space. The key points to consider are as follows:
► Mark UNIX System Services programs as program controlled with the
extattr +p command.
► Allow the CICS TG user ID read access to program controlled libraries.
250 CICS Transaction Gateway V5
Further details can be found in Chapter 7, “TCP connections to the Gateway
daemon on z/OS” on page 133.
CICS TS considerations
You need to perform the following tasks:
► Configure an EXCI connection in CICS
► Set the RRMS, and IRCSTRT SIT parameters
► Define the CICS EXCI library to your J2EE Server
► Define RACF security profiles
SIT parameters
Since the CICS TG and WebSphere use EXCI for communications and MVS
resource recovery services (RRS) for transactional support, you should enable
support in CICS using the following SIT parameters:
► RRMS=YES
► IRCSTRT=YES
► ISC=YES
You will then need to restart your CICS region to put these parameters into effect.
EXCI connections
Because the CICS ECI resource adapter uses the function of the CICS TG to
connect to CICS, you will need to configure an EXCI CONNECTION definition in