Parameters

TYPE=

Specifies the type of FSS you are defining.

WTR: Specifies that an output writer FSS is being defined.
CI: Specifies that a JES3 converter/interpreter (C/I) FSS is being defined. If SMS is active on the global, JES3 will not start a local C/I FSS unless SMS is also active on the main where the FSS is defined.

FSSNAME=

Specifies the installation-defined name of the FSS. The first character of the name must be an alphabetic character; the remaining characters must be alphameric or national characters. The name may be 1 to 8 characters. To define more than one device to run under an output writer FSS, specify this name on the FSSNAME parameter of each printer's DEVICE initialization statement.

MSGDEST=

Specifies the routing information for messages concerning this output writer FSS. This value may be specified as a JES3 destination class or as an MVS™ routing code.

If a routing code is used, nnn specifies a decimal number from 1 through 28, or 41 through 128. Routing codes 29 through 40 are reserved for IBM's use and will be ignored if specified.

The default of routing code 42 is the routing code equivalent of JES3 Dest Class JES.

This parameter also applies to messages that originate from a CI/FSS address space, unless the installation instructs JES3 not to override the destination class for CI/FSS messages. See the CIFSS=MSGROUTE parameter on the CONSTD statement for more information. Do not specify ALL or MLG as values for this parameter. You can modify this value during system operation using the *MODIFY,F,FSS= command; however, any changes to this value do not take effect until the next time the FSS is started.

If you specify an invalid subparameter, JES3 uses the parameter default.

PNAME=

Specifies a member of the procedure library for started task jobs, which contains a cataloged procedure for starting the FSS. The member must be in the procedure library defined by the STCPROC parameter of the STANDARDS statement, or in procedure library IATPLBST, if the STCPROC parameter is omitted.

Parameter default: For a C/I FSS, the default member name is JES3CI. For an output writer FSS, see Print Services Facility/MVS System Programmer's Guide for the default member names of the start-up procedures for PSF/MVS driven printers.

SYSTEM=

Specifies the JES3 main on which the FSS is to operate. The names must be the same as specified on the NAME parameter of the MAINPROC statement for the main.

If you specify pairs of mains (the (sysname1,sysname2) form), the first main name specifies a potential global. The second main name specifies the main on which the FSS is to operate when the first main is actually the global. If a dynamic system interchange (DSI) occurs, the FSS will be relocated according to the specifications of this parameter the next time the FSS is started. If the actual global is not the main specified by the first main name in any pair, the FSS is not eligible to run.

For example, suppose this parameter specifies SYSTEM=(SY1,SY2,SY2,SY3). When JES3 or the operator starts the FSS, the global is SY1 and JES3 establishes the FSS address space on SY2. Later, a DSI takes place and SY2 becomes the global. The FSS address space continues running on SY2 until, for whatever reason, the FSS terminates. When JES3 or the operator restarts the FSS, JES3 establishes the FSS address space on SY3.

You must specify either a single system name or the system names must be paired. Otherwise, the one or more default values will be used. You can specify up to 8 pairs of system names.

Parameter default:

For a C/I FSS, the default value is the name of the global.

For an output writer FSS, JES3 finds the first printer defined in the initialization stream which is assigned to this FSS. If that printer is defined as attached to only one main, that main is the default. If the printer is defined as attached to more than one main including the global, the global is the default. Otherwise, the default is the main specified on the first MAINPROC statement in the initialization stream to which the printer is defined as attached.

TERM=

Specifies whether the FSS terminates if the JES3 global address space terminates.

If you specify an invalid subparameter, JES3 uses the parameter default.

Note: If you specify TERM=YES, and bring JES3 down during a minimal spool condition, the FSS address space termination will not take effect. You should therefore exercise care when restarting JES3 during a minimal spool condition.

START=

Specifies whether JES3 should start the FSS automatically when the main on which the FSS is to run is connected to the global. This parameter applies only to C/I FSSs. If specified for an output writer FSS, this parameter is ignored.

If you specify an invalid subparameter, JES3 uses the parameter default.

Note: If a C/I FSS terminates for reasons other than the reason identified by the TERM= parameter (that is, terminating JES3 because of a *RETURN command), JES3 changes the START= setting for that C/I FSS to START=NO. START=NO indicates that if JES3 is subsequently hot started, the FSS is not automatically started. In this way, JES3 protects itself from restarting a C/I FSS that previously terminated for reasons beyond JES3's control. You need to issue the *F F FSS=fssname,ST=Y command to start the FSS again.

DSPCNT=

Specifies the maximum number of CI DSPs that can operate in the C/I FSS address space at any time. The first subparameter (maxbatch) specifies the maximum number of CI DSPs that process batch jobs. The second subparameter (maxdemsel) specifies the maximum number of CI DSPs that process demand select jobs (that is, started tasks and TSO LOGONs).

The sum of the two subparameters cannot exceed 256. CI DSPs defined to process batch jobs cannot be used to process demand select jobs, and vice versa. This parameter applies only to C/I FSSs. If specified for an output writer FSS, this parameter is ignored.

If you specify an invalid subparameter, JES3 uses the parameter default.

MAXASST=

Specifies the maximum number of JCL statements that can be processed concurrently by all CI DSPs in the C/I FSS address space. The value must be an integer between 0 and 99999999, inclusive. A value of 0 means no JCL statement limit applies; JES3 does not check how many JCL statements are being processed. For guidelines on choosing a value for this parameter, see z/OS JES3 Initialization and Tuning Guide.

This parameter applies only to C/I FSSs. If specified for an output writer FSS, this parameter is ignored.

If you specify an invalid subparameter, JES3 uses the parameter default.