You can run multiple versions of the Gateway in the same
LPAR. To enable this when using XA support, the CTGRRMS services must
be running, and must be at the level of the latest release of CICS® Transaction Gateway installed
on the LPAR.
You must use ctgasi or a Gateway from the latest release
to start the CTGRRMS services before you start any of the Gateways
from the earlier releases. The CTGRRMS service task stays active for
the duration of the z/OS® image.
Therefore, starting or refreshing the services must be done when the
new release of the Gateway is installed, or following a re-IPL of
the LPAR.
Check that the LLA list contains the latest
level of the SCTGLINK data set by using this command:
DISPLAY LLA
and
see
Refreshing CTGRRMS services if you need to refresh CTGRRMS
services.
If you need to re-IPL an LPAR, perform the procedure
described in LPAR IPLs in an XA environment.