Defining groups of APPC sessions

Each group of sessions for an APPC system is defined by means of a SESSIONS resource.

Each individual group of sessions is referred to as a modeset.

Specify the following attributes:

SESSIONS(csdname)

CONNECTION(name)

The CONNECTION option specifies the name (1–4 characters) of the APPC system for which the group is being defined; that is, the CONNECTION name in the associated DEFINE CONNECTION command.

MODENAME(name)

Specifies a name (1–8 characters) that identifies this group of related sessions. The name must be unique among the modenames for any one APPC intersystem link, and you must not use the reserved names SNASVCMG or CPSVCMG.

PROTOCOL(APPC)

MAXIMUM(m1,m2)

Specifies the maximum number of sessions that are to be supported for the group. The parameters of this option have the following meanings:

m1 specifies the maximum number of sessions in the group. The default value is 1.
m2 specifies the maximum number of sessions to be supported as contention winners. The number specified for m2 must not be greater than the number specified for m1. The default value for m2 is zero.

SENDSIZE(size)

The maximum size of request unit (RU) to be sent, in the range 256 - 30 720.

RECEIVESIZE(size)

The maximum size of request unit (RU) to be received, in the range 256 - 30 720.

SESSPRIORITY(number)

AUTOCONNECT(NO|YES|ALL)

Specifies whether the sessions are to be bound when CICS® is initialized. Further information is given in The AUTOCONNECT attribute.

USERAREALEN(value)

RECOVOPTION(SYSDEFAULT|UNCONDREL|NONE)

If you are using z/OS® Communications Server persistent session support, and CICS fails and restarts within the persistent session delay interval, the RECOVOPTION option specifies how CICS recovers the sessions. (The RECOVNOTIFY option does not apply to APPC sessions.) Further information is given in Using z/OS Communications Server persistent sessions on APPC links.