Pathway/XM System Management Manual

Managing a Pathway/XM Environment
Compaq NonStop™ Pathway/XM System Management Manual—426761-001
7-35
Escalating the Shutdown Operation
The IMMEDIATE option is the quickest way to shut down a Pathway/XM environment,
but you must consider the following consequences before specifying this option:
•
If completed successfully, the IMMEDIATE option stops processes immediately,
regardless of the presence of pending requests and incomplete operations. Unlinked
server processes are not able to perform any epilog processing.
•
During STOP PATHWAY IMMEDIATE, the TCP is unable to reset terminals
under its control. To use these terminals, you must first reset them by waking the
TACL process running on the terminal, or, once the Pathway/XM environment is
running again, start the TERM object associated with that terminal. Other TERM
objects and devices might require some other form of initialization.
•
The status of any outstanding transactions is unknown.
Escalating the Shutdown Operation
If you choose the ORDERLY or ABORT option, you can escalate the shutdown
operation while shutdown is in progress by specifying a TIMEOUT option. This option
returns the PXMCOM prompt within a specified time period, allowing you to execute a
more forceful shutdown command. The following command specifies a five-minute
timeout option:
>> STOP PATHWAY, MODE ORDERLY, UNTIL TIMEOUT 5 MINS
If the shutdown operation has not completed after five minutes, the PXMCOM prompt
returns while the shutdown operation continues.
The TIMEOUT option is especially useful if you want to escalate the shutdown
operation from within a command file or TACL routine.
You can also escalate the shutdown operation by pressing the Break key to terminate the
PXMCOM process, then restart PXMCOM.
Monitoring Shutdown Status
You can monitor the status of the STOP PATHWAY operation in one of two ways:
•
Include the STATUS AGGREGATE option in your STOP PATHWAY command,
as shown in the following example:
>> STOP PATHWAY, MODE ORDERLY, STATUS AGGREGATE, &
>> UNTIL TIMEOUT 5 MINS
The STATUS AGGREGATE option tells PXMCOM to display shutdown status
every 20 seconds until shutdown completes or until the TIMEOUT option (if
specified) expires.
•
Specify the STATUS PATHWAY command from any PXMCOM process. (For
details on using the PXMCOM process that issued the STOP PATHWAY
command, refer to Using PXMCOM During Shutdown
on page 7-36.)
Both STATUS commands provide the following information:
•
Whether the Pathway/XM environment is shutting down, or shutdown has failed