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HP Integrity NonStop J-Series User Manual

Page 164

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NonStop AutoTMF Commands

HP NonStop AutoTMF Software User’s Guide429952-016

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TRACE

sets a time limit of n minutes for tracing, starting when the command is
entered. If n is set to 0, then there is no time limit. When the time limit expires,
the trace configuration is reset and processes currently tracing with the
configuration cease tracing.

The default is 60 minutes.

MAXEXTENTS 16-to-978

the total number of primary and secondary extents for the trace file.

The default is 128.

MAXFILESIZE

a shorthand for EXT 2048 MAXEXTENTS 512, which is a 2 gigabyte file.

The maximum trace file that can be specified is 2 gigabytes. The user may
preallocate trace files larger than 2GB.

PROTECTED

restricts access to a given trace file to one process. The process performs a
protected open on the trace file.

SEPARATE

writes each process trace to a separate trace file.

Otherwise, all traces for a specific trace definition are written to the file
specified in the command.

To use separate trace files, the trace file name must must be five characters or
less, to allow a three-digit sequence number to be appended to the file name
and create unique file names (TRACE000, TRACE001, and so on).

The collection of trace files is managed by the user. Each trace activation
attempts to find some unused name of the form [file]nnn. If all 1000 file names
are in use, the trace is not performed.

TRAN[SID]

displays the current process transaction identifier after every intercepted
operation.

TRANSID generates many additional trace entries and is useful to diagnose
specific AutoTMF problems. Use it only if instructed to do so by support.

By default, trace entries for BEGINTRANSACTION, RESUMETRANSACTION
and ENDTRANSACTION operations show the current transaction whenever it
changes, which provides sufficient information for most diagnostic needs.

STOP

stops the current tracing activity.

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