Defining CICS start-up jobstream

The following parameters must be defined in the start-up jobstream for a CICS region that supports IIOP:

JCL parameter
REGION
1000M minimum is recommended
CICS system initialization parameters
EDSALIM
500M minimum is recommended.
IIOPLISTENER
  • Specify IIOPLISTENER=YES if the CICS region is an IIOP listener region, or a combined listener and application owning region (AOR).
  • Specify IIOPLISTENER=NO if the CICS region is an IIOP application owning region. TCPIPSERVICE definitions installed in the region that specify PROTOCOL(IIOP) cannot be opened.
JVMPROFILEDIR
Set to the HFS directory containing the JVM profiles that you are using for your applications. Enabling CICS to locate the JVM profiles and JVM properties files tells you how to do this.
KEYRING
Required if you are using Secure Sockets Layer (SSL) authentication with certificates registered to RACF®.
MAXJVMTCBS
Specify the number of JVMs that your CICS region can support. The CICS® Performance Guide tells you how to work out an appropriate setting for the MAXJVMTCBS system initialization parameter.
TCPIP
Set to YES.
DD statements for CICS datasets
Sample local VSAM data set definitions are provided in the CICS-supplied RDO group DFHEJVS. These data sets must be authorized with RACF for UPDATE access. See the CICS RACF Security Guide.
DFHEJDIR
A recoverable shared file containing the request streams directory. This can be a VSAM file or a coupling facility data table. CICS supplies sample JCL to help you create this file, in the DFHDEFDS member of the SDFHINST library.
Note: In most cases, the RECORDSIZE parameter in the supplied JCL should not require modification. However, if you intend to install more than 40 CorbaServers in your logical EJB/CORBA server, see Specifying the RECORDSIZE of DFHEJDIR and DFHEJOS.
DFHEJOS
A non-recoverable shared file used by CICS when CorbaServers are installed and to store stateful session beans that have been passivated. This can be a VSAM file or a coupling facility data table. CICS supplies sample JCL to help you create this file, in the DFHDEFDS member of the SDFHINST library.
Note: In most cases, the RECORDSIZE parameter in the supplied JCL should not require modification. However, if you intend to install more than 40 CorbaServers in your logical EJB/CORBA server, see Specifying the RECORDSIZE of DFHEJDIR and DFHEJOS.