SQL> drop user SCOTT cascade 2 / drop user SCOTT cascade * ERROR at line 1: ORA-01940: cannot drop a user that is currently connected
SQL> SELECT SID,SERIAL#,STATUS from v$session where username='SCOTT'; SID SERIAL# STATUS ---------- ---------- -------- 44 56381 INACTIVE 323 22973 INACTIVE2. Kill the sessions:
SQL> ALTER SYSTEM KILL SESSION '44,56381' immediate; System altered. SQL> ALTER SYSTEM KILL SESSION '323,22973' immediate; System altered. SQL> SELECT SID,SERIAL#,STATUS from v$session where username='SCOTT'; no rows selected3. Now the drop the user:
SQL> drop user SCOTT cascade user dropped.