CICS coupling facility data tables provide rapid sharing
of working data within a sysplex, with update integrity. The data
tables are held in coupling facility structures, with access through
a named server. You must set up one server for each pool in an MVS
image.
Before you begin
Before you can start a server for named coupling facility
data table pool, define the coupling facility structure to be used
for the pool. See Defining a coupling facility data table pool for
information about defining a coupling facility list structure.
About this task
You can put related groups of coupling facility data tables
in separate pools; for example, you might want to have one pool for
production and another for test. A pool is defined as a list structure
in the coupling facility resource management (CRFM) policy. The pool
name is used to form the server name with the prefix DFHCF and is
specified in the startup JCL for the server.
Procedure
- Define and start a coupling facility data table server
job, to run in an mvs batch region.
- When the server is running you can perform various operating
tasks:
- You can control the server region using MVS commands.
- You can delete or empty the pool for the coupling facility
data tables.
- You can unload and reload the contents of a pool to and from
a sequential data set.