Oracle Trace

Hi,

I am using:
Oracle Version 8.1.7i

We are generating trace files using the following
otrccol start 1 tr_otrccol.param

we use the option "max_cdf_size"; which create the ".sav" file once the size is reached.

I have been asked to produce an application that processes these trace files and I need to know the following in order to be able to do this.

The files are to be processed offline, and I need to be able to detect that oracle created the ".sav" file. ie Does oracle apply any sort of flag to the trace files that can be programmatically detected?

Thanks in advance for the help