How to find your own trace file from udump directory?

Hi

How will you find your own trace file from the udump directory, if multiple users generated the trace file at the same time (with in micro seconds)... ? i mean how will you identify your trace file.... (WinNT / UNIX)

Could some one throw some light on this...

Hi,

select c.value || '/' || 'ora_' ||
ltrim(to_char(a.spid,'fm99999')) || '.trc'
from v$process a, v$session b, v$parameter c, v$thread c
where a.addr = b.paddr
and b.audsid = userenv('sessionid')
and c.name = 'user_dump_dest'

gives trace filename for current session.