oracle删除表空间、删除已连接的用户
删除表空间：
drop tablespace ECPTABLESPACEIDX including contents and datafiles;
删除已连接的用户
alter user ecp account lock;
select username,sid,serial# from v$session where username like '%ECP%';
//alter system disconnect session '30,5427' immediate;
alter system kill session'28,21617';
drop user ecp cascade;