HP-UX TN3270 Administration Guide

Using TN3270 Tracing Facilities
Controlling Tracing
Chapter 5 63
Resetting Trace Files
The SNATRCRESET environment variable controls whether a trace file is
reset when an application first writes to it. Normally, the file is reset and
its contents discarded when an application writes its first trace message
to the file. If you are tracing two or more applications to the same file, or
if you want to trace two or more runs of the same application to the same
file, you can prevent the file from being reset by setting the
SNATRCRESET environment variable to NO.
If you are tracing to two files, the files continue to be reset as normal
when the maximum file size is reached, but they will not be reset when
an application starts tracing for the first time. If you are tracing to one
file, setting SNATRCRESET to NO means that the file will never be reset
automatically. To avoid taking up too much disk space, delete it manually
from time to time.
To cancel the setting of SNATRCRESET and return to the default setting
so that the file is reset when an application first traces to it, set
SNATRCRESET to YES.