Identify the Session.
===========================================
SQL> SELECT USERNAME, SID, SERIAL#, STATUS FROM V$SESSION;USERNAME SID SERIAL# STATUS
------------------------------ ---------- ---------- --------
1 1 ACTIVE
2 1 ACTIVE
3 1 ACTIVE
4 1 ACTIVE
SYSMAN 6 110 INACTIVE
10 1 ACTIVE
MICR 11 47 INACTIVE
64 1 ACTIVE
65 1 ACTIVE
66 1 ACTIVE
67 26 ACTIVE
USERNAME SID SERIAL# STATUS
------------------------------ ---------- ---------- --------
68 1 ACTIVE
SYSMAN 69 1 INACTIVE
125 1 ACTIVE
126 1 ACTIVE
127 1 ACTIVE
128 1 ACTIVE
130 3 ACTIVE
SYSMAN 133 15 INACTIVE
137 42 ACTIVE
SYSMAN 139 3 ACTIVE
187 1 ACTIVE
USERNAME SID SERIAL# STATUS
------------------------------ ---------- ---------- --------
188 1 ACTIVE
189 1 ACTIVE
190 1 ACTIVE
194 21 ACTIVE
SYS 200 151 ACTIVE
SYSMAN 202 10 INACTIVE
28 rows selected.
KILLING SESSION
==============================================
SQL> ALTER SYSTEM KILL SESSION '11,47';
System altered.
In a RAC environment, you optionally specify the
INST_ID
SQL> ALTER SYSTEM KILL SESSION 'sid,serial#,@inst_id';