TS/MP 2.5 System Management Manual

To avoid orphaned processes, first use the STATUS PATHWAY command, before executing the
STOP PATHMON command, to determine what type of processes are running. Use the STATUS
command on each type of object to find the names of the active processes, then stop each process.
After all processes are stopped, then run the STOP PATHMON command.
Errors
This table lists the most common error that can occur during the processing of the STOP PATHMON
command:
Is Displayed When…This Message…
You have issued a STOP PATHMON command but the
PATHMON process is not in the shutting-down state.
*1045* REQUEST NOT VALID FOR CURRENT STATE
Issue a SHUTDOWN2 PATHWAY command before issuing
the STOP PATHMON command.
SWITCH PATHMON Command
Use the SWITCH command to direct the PATHMON process to exchange the function of its primary
process with the function of its backup process while the PATHMON process is running.
This command does not change the PATHMON processor definitions in the PATHMON configuration
file.
SWITCH PATHMON
Considerations
• Use the STATUS PATHMON command to identify the CPUs in which the PATHMON primary
and backup processes are actually running after you have repeatedly entered the SWITCH
command.
• Whenever the PATHMON primary or backup process is stopped more than 10 times by a
STOP command, the PATHMON process delays creating a backup process. The PATHMON
process delays creating a backup process by 1 minute if stopped 11 times, 2 minutes if stopped
12 times, and so forth.
However, the PATHMON process does not delay creating a backup process if any of these
occur:
◦ The processor in which the PATHMON primary or backup process is executing fails.
◦ A PATHCOM SWITCH command is run.
◦ A CONTROL PATHMON BACKUPCPU command is run.
When the PATHMON process does not delay the creation of a backup process, it resets its
internal counter. Consequently, creation of a backup process has to fail ten more times before
the PATHMON process delays creating the backup process.
• After successfully executing a SWITCH PATHMON command, the PATHMON process logs this
status message:
STATUS - *1077* TAKEOVER BY BACKUP
176 PATHMON Environment Control Commands