ORA-00030 with DBMS_MONITOR.SESSION_TRACE_ENABLE

Question

Hi all,
The DBMS_MONITOR.SESSION_TRACE_ENABLE returned ORA-00030 although the session is already there.
Oracle 11g R1
Windows Server 2003 SP2
SQL> show user
USER is "SYS"
SQL>
SQL>  select sid, serial# from v$session where username='SA' ;
       SID    SERIAL#
       390       4918
SQL> exec DBMS_MONITOR.SESSION_TRACE_ENABLE(session_id=>390, serial_num=>4918, waits => TRUE, binds => FALSE);
ERROR at line 1:
ORA-00030: User session ID does not exist.
ORA-06512: at "SYS.DBMS_MONITOR", line 123
ORA-06512: at line 1

Answer 1

Hi Zekeriya,
I'm using a single node database with ASM.
I re-connected and issued your query and following is what I got:
SQL> ed
Wrote file afiedt.buf
  1  select s.osuser,p.spid,s.username,s.sid,s.serial#,to_char(s.logon_time,'Dy dd Mon HH24:MI:SS') start_time,s.status,s.machine,s.MODULE
  2  from V$PROCESS p,V$SESSION s where s.paddr = p.addr and s.username='SA'
  3* order by logon_time
SQL> /
OSUSER                         SPID
USERNAME                              SID    SERIAL# START_TIME
STATUS   MACHINE
MODULE
SRV01\Administrator            4000
SA                                    390       4928 Wed 12 May 23:42:55
INACTIVE WORKGROUP\USER-PC
FINANCIAL
SQL> exec DBMS_MONITOR.SESSION_TRACE_ENABLE(session_id=>390, serial_num=>4928, waits => TRUE, binds => FALSE);
BEGIN DBMS_MONITOR.SESSION_TRACE_ENABLE(session_id=>390, serial_num=>4928, waits => TRUE, binds => FALSE); END;
ERROR at line 1:
ORA-00030: User session ID does not exist.
ORA-06512: at "SYS.DBMS_MONITOR", line 123
ORA-06512: at line 1