SQL> select u_dump.value || '/' || db_name.value || '_ora_' || v$process.spid || nvl2(v$process.traceid, '_' || v$process.traceid, null )|| '.trc' "Trace File" from v$parameter u_dump cross join v$parameter db_name cross join v$process join v$session on v$process.addr = v$session.paddr where u_dump.name = 'user_dump_dest' and db_name.name = 'db_name' and v$session.audsid=sys_context('userenv','sessionid');
Trace File
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/opt/ora10g/admin/ORCL/udump/ORCL_ora_2754.trc