TMF Planning and Configuration Guide (H06.05+)

Concepts and Capabilities
HP NonStop TMF Planning and Configuration Guide—540136-002
1-7
Stopping TMF Abruptly
The STOP TMF command, without any of the optional parameters, initially does the
following:
•
Prevents any new transactions from beginning
•
Allows all currently active transactions to complete
•
Allows audit dumps in progress to complete
After all transactions and audit dumps are completed, the STOP TMF command then
does the following:
•
Stops audited updates on all configured data volumes
•
Stops the backout process and the catalog process
At this point TMF is stopped, and any applications using it to access audited database
tables and files can no longer do so.
Stopping TMF Abruptly
When you stop TMF abruptly (using the ABRUPT option in the STOP TMF command),
the TMP shuts everything down immediately (all activities currently in progress are
abandoned), and then the TMP itself terminates. The TMFMON2 process starts a new
primary TMP using the process configuration attributes in the TMF configuration file.
There are three situations in which you might choose to stop TMF abruptly:
1. You have issued a STOP TMF command, but something in the environment is
preventing a clean shutdown from occurring.
2. You have changed some of the process attributes of the TMP (such as the
processor residency or the process priority) and you want to stop, and then restart,
the TMP to activate the new attribute values.
3. You need to move your TMF configuration files (in the TMFCONF subvolume) to
another volume.
Before you issue a stop abrupt request to activate process attribute values or move
configuration files, you should always obtain a clean shutdown of TMF by issuing a
non-abrupt stop request. .
Restarting TMF
To restart TMF, issue a START TMF command. That command, without any of the
optional parameters, does the following:
•
Starts the backout process and the catalog process
Caution. Before issuing a stop abrupt request on a production system, contact your service
provider to confirm that it is necessary.