OSI/MHS Configuration and Management Manual

Management Environment for OSI/MHS
OSI/MHS Configuration and Management Manual—424827-003
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GROUP Objects
•
Add, delete, and alter the specified group
•
Start and stop the group and the process(es) it contains
•
Find out the name(s) of the process(es) configured in the group
•
Find out the names of some or all groups in the OSI/MHS subsystem
GROUP Object Summary States
An OSI/MHS GROUP object can go through a sequence of states that depends on the
states of its subordinate PROCESS object(s). You can use the SCF STATUS
command to inquire about the summary state of a group. Other SCF commands allow
you to change its summary state.
The STARTED state, for an OSI/MHS group, means that the group and the
process(es) it contains are running and ready to accept requests from other subsystem
components. The STARTED state results from directing a START command to the
GROUP object. You must start the class that contains a group before you can start the
group, and you must start the group to start the process(es) it contains.
STARTING is a transitional state. It means that a START command was directed at a
GROUP object, but one or more PROCESS objects in the group have not yet started
or completed initialization or recovery.
The STOPPED state, for an OSI/MHS group, means that the group contains no
process that is running and does not accept requests from other subsystem
components. You cannot stop a PROCESS object directly, but it stops if you direct a
STOP or ABORT command at its GROUP object. The group must be in the STOPPED
state before you can alter its attributes.
Figure 2-7. GROUP Object Summary States
UNDEFINED
STOPPED
STARTED
ADD
DELETE
START
STOPPING
STOP
or ABORT
STARTING
324VST .VSD
Note: Boxes represent the stable states of a GROUP object; ovals
represent a transition state; and arrows represent the SCF commands that
change the GROUP state.