For each CICS® connection definition,
define one or more session definitions to specify the SNA mode groups
to be used within that connection, if you are not using autoinstalled
connections.
Use CEDA to create a SESSION definition with the
following settings:
- Connection
- Set to the name of the associated connection definition.
- MOdename
- Specify the mode group as defined in a VTAM® LOGMODE. The modename must be unique among
the sessions definitions that relate to one connection definition.
- Protocol
- Set to APPC.
- MAximum
- Specify the maximum number of sessions that are to be supported.
The first value is the maximum number of sessions that can be supported.
The second value specifies the number of contention-winner sessions
(CICS-owned sessions). These values are negotiated during change number
of sessions (CNOS) flows, when the sessions are actually bound; the
negotiated values depend on the settings specified in the partner
SNA node.
Set the first value to be at least as big as the MAXREQUESTS
parameter in the ctg.ini file,
to prevent a bottleneck to throughput. Set the second value to 001,
to ensure that START requests are shipped serially from the server
to the client.
- Autoconnect
- Set to determine whether the sessions for this mode group will
be bound when the connection is installed. Set it to one of the following:
- Yes to bind only contention-winner sessions
- All to bind all sessions