Step 2.3 – Define EMCS consoles

Select this step to define parameters for the allocation of Extended MCS Consoles (EMCS Consoles) by Control-O.

EMCS Consoles are logical consoles not associated with any physical device. Like other applications such as SDSF or TSO CONSOLE, Control‑O uses these consoles for issuing operator commands and for receiving the output resulting from those commands.

When the Control-O monitor is started, it allocates a number of EMCS Consoles. Some of these consoles are allocated with a migration ID, and some of them are allocated without a migration ID. When the monitor terminates, it releases these allocated EMCS Consoles for reuse.

When a rule requests the issue of an operator command in Command/Response mode, Control‑O selects a console through which to issue the command. That console remains occupied until the command has been executed and the response to it has been received.

When selecting a console for this purpose, Control‑O first tries to use a subsystem console. However, when no subsystem consoles are defined, or when all defined subsystem consoles are in use, one of the available EMCS Consoles is used. An available EMCS console that has a migration ID is selected in preference to one that does not have a migration ID.

This step generates statements that become part of the CTOPARM member.

Insert values for the parameters shown in the following table:

Table 96 EMCS console definition parameters

Parameter	Description
System	The SMF ID or System Name of the system to which this EMCS Console definition statement applies. Valid values are: SMF or SYSTEM – This statement applies to all systems that do not have a specific EMCS Console definition. Default. xxxxxxxx – This statement applies only to the system with this SMF ID or System Name. Maximum: 8 characters.
Prefix	The four characters that will be used as a prefix when assigning names to the EMCS Consoles. If the specified prefix is shorter than 4 characters, it will be padded with '@' signs.
	Note: The prefix must start with an alphabetic character.
	Valid values are: SMF – A generic prefix that will translate to the SMF ID of the system where Control‑O is active. Default. SSI – A generic prefix that will translate to the name of the IOA subsystem. xxxx – Any other prefix of up to 4 alphanumeric characters.
	Note: As of version 6.1.00, it is no longer advantageous to assign a unique EMCS Console name prefix to each Control-O monitor. The same prefix, specific or generic, can be assigned to some or all of the Control-O monitors in the Sysplex.
EMCS#	The number of EMCS Consoles without a migration ID that are allocated by the Control‑O monitor. Valid Values: 0 through 999 can be specified. Default: 10
MIG#	Number of EMCS Consoles with migration IDs that are allocated by the Control‑O monitor. Depending on constraints imposed by MVS, a number from 0 through 152 can be specified. Default: 1
ORDER#	Used to sort the EMCS Console definitions so that they appear in a particular order under ICE. If you insert values in this field, the line with the lowest value appears as the top line. Valid values are: ' ' (Blank). Default. 0 through 998. The value 999 is reserved for certain purposes.

Parent Topic

Step 2 – Specify Control-O parameters