TMF Management Programming Manual (G06.26+)

Commands and Responses
HP NonStop TMF Management Programming Manual—522420-003
5-146
START TMF
Tokens in Command Buffer
ZTMF-MAP-Start-Tmf
is an extensible structured token that modifies the behavior of the command. This
token is required; only one occurrence is allowed. This token contains the
following field:
ZTransAllowOption
specifies whether new transactions are allowed immediately after TMF is
started. The following values are valid:
If null when TMF is first started, the default is ZSPI-VAL-TransAllow-Enable. If
null at any other START TMF command, the value already specified remains
unchanged.
After the START TMF command is started, use the ENABLE/DISABLE
BEGINTRANS commands to allow or disallow new transactions.
Usage Guidelines
•
Only super-group users can issue this command.
•
This command is not equivalent to the TMFCOM command START TMF. It is
equivalent to the three TMFCOM commands START TMF, START
TRANSACTION, and ENABLE VOLUMES.
•
TMF must be stopped, and the master audit trail configured, when you issue the
START TMF command. (Once TMF has been started the first time, auxilliary audit
trails can be configured at any time, regardless of whether TMF is stopped or
started.)
•
During START TMF operation, volume recovery might not be able to recover some
files. The unrecovered files will not be available when the operation completes but
they will be listed in EMS messages. To make them available, you might need to
use the RECOVER FILES command to perform a file recovery. (To support file
recovery, of course, you must regularly produce online and audit dumps.)
If you issue a STOP TMF command during a start operation, the command might
not take effect immediately; this delay, however, should not be long.
ZTMF-VAL-TransAllow-Enable New transactions are allowed
ZTMF-VAL-TransAllow-Disable New transactions are not allowed
Caution. Before issuing the START TMF command, verify that the shutdown is complete;
otherwise, damage to your database can occur during the restart.
In addition, if multiple users are accessing your TMFSERVE process through multiple
TMFCOM processes, be sure to communicate your intentions to stop or restart the subsystem.