--创建表空间

Create  tablespace BRANCH datafile 'D:\tablespace\BRANCH.dbf' size 500M autoextend on maxsize unlimited;

--查询YS所拥有的表空间

select distinct(tablespace_name) from dba_segments where owner='YS';

--删除用户

drop user ys cascade；

--删除表空间及表空间文件

drop tablespace ysspace including contents and datafiles;

--查询session

select sid,serial# from v$session where username='ys';

--删除session

alter system kill session '222,333' immediate;

--解锁用户

alter user ys account unlock;

--用户修改密码

alter user ys identified by ys;

--创建用户

CREATE USER test1 PROFILE "DEFAULT"

IDENTIFIED BY test1 DEFAULT TABLESPACE "EBPSPACE"

QUOTA UNLIMITED

ON "EBPSPACE"

ACCOUNT UNLOCK;

--授权

GRANT "CONNECT" TO test1;

Grant read,write on directory db_bak to test1;

GRANT "DBA" TO test1;

--表移动表空间

alter table table_name move tablespace tablespace_name;

--有索引的话必须重建索引

alter index index_name rebuild tablespace tablespace_name;

--查看锁表

SELECT object_name, machine, s.sid, s.serial#

FROM gv$locked_object l, dba_objects o, gv$session s

WHERE l.object_id = o.object_id

AND l.session_id = s.sid;