How can I make the audit system create new audit files if they already exist? I am trying to make my audit files easier to read, I have audit trail configured as xml,extended. The problem is that if my server gets busy and reuses the pids - the logs are being appended to the same file. 

I understand that there is a way to create a new file with suffixes if the audit file already exists. How can I do that? I use Oracle 10.0.4.0
There doesn't seem to be any reference to being able to directly manipulate the audit file names in 10g.  The closest thing I found is Bug 6023472 which lists the following changes introduced in 10.2.0.5/11.1.07/11.2.0.1:


OS/XML Audit filenames will have a filename format of the form:
  &lt;InstanceName&gt;_&lt;ProcessName&gt;_&lt;ProcessID&gt;_&lt;SerialNo&gt;.&lt;Extension&gt;
The default value for Max Audit FileSize is 1000KB and Max Audit File Age is 1 Day. This means that once one of these max limits are 
reached, the audit records will be written in a new audit file with same 
"&lt;InstanceName&gt;_&lt;ProcessName&gt;_&lt;ProcessID&gt;_" part, but with a new "&lt;SerialNo&gt;".


I'm not sure how Oracle assigns PIDs, but you could try increasing your PROCESSES parameter to see if that keeps it from re-using the values as quickly.