Starting CICS Transaction Gateway
CICS® Transaction Gateway can be started either as a batch job (the recommended option) or from the command line.
- Submit JCL to start CICS Transaction Gateway as a batch job if you want to register with the ARM (Automatic Restart Manager) component of MVS™. For more information see Automatic restart management. ARM is the recommended option.
- Alternatively you can start CICS Transaction Gateway from the z/OS UNIX System Services command line.
When you start the CICS Transaction Gateway, it reads configuration information from ctg.ini, ctgenvvar, and stdenv. When you issue the ctgstart command, you can specify startup options to override this configuration information. These options and their values are described in Options on the ctgstart command.
If XA support is enabled, the recoverable resource
management services (RRMS) of the IBM® z/OS® sync
point manager are required. CICS Transaction Gateway accesses
RRMS through CTGRRMS services which run in a separate address space.
This address space is started in these circumstances:
- The first time you start the Gateway daemon.
- When you run the ctgasi command; see Starting, stopping or refreshing the CTGRRMS services.
A Gateway daemon cold start option startup is provided. Cold start is for use with XA transactions and ensures residual records in RRS are cleaned up after failure of a transactional component, or by manual intervention by an operator through the RRS panels. For more information see Cold start.
Information