Hi All, Env : 10g 10.1.0.2.0, win2003 Setting the sql_trace=true (at instance level) generates the trace filename in instancename_ora_spid.trc format, but I want the it to be in client_identifier_ora_spid.trc (i.e. 192.168.100.22_ora_3124.trc). It's needed to trace the session which are being generated from application server connection pool. Thanks Arvind Kumar