Addressing OLTP Solutions with CICS: The Transaction Server ... - Ibm

is also necessary to use native AIX and Encina commands to configure and
start the SFS.
Figure 23. Using a Remote SFS without CICS for AIX Installed
• Remote SFS on a machine with CICS for AIX installed
A CICS for AIX region on one machine shares an SFS with a CICS for AIX
region on another machine (see Figure 24). CICS administration services
are used for configuring the SFS, but native Encina and DCE commands are
used to add the queues and user files to the SFS. With this option, native
AIX and Encina commands rather than CICS facilities must be used to
configure the SFS for CICS queue management.
Figure 24. Using a Remote SFS with CICS for AIX Installed
6.2.2 DCE
82 CICS for AIX as the Transaction Server
Depending on your decision to use DCE, there are three possible cases to
consider:
• Both the region and the SFS are in the same DCE cell
In this case DCE can be used by CICS for AIX to locate the SFS, and it is
possible to use user and RPC authentication.
• A CICS for AIX region that does not use the DCE CDS
If the CICS for AIX region does not use the DCE CDS or security services, it
is still possible for it to use an SFS that does use DCE CDS, as long as the
SFS and the region are in the same TCP/IP network and the CICS for AIX
region includes the SFS host name in the $CICS_HOSTS environment
variable (held in /var/cics_regions/regionName/environment). However, both
the region and the SFS must be defined with protection levels set to none. In