oracle常用数据字典
查看sid
select instance_name from v$instance;
?
查看死锁
select A.sid, b.serial#,
?decode(A.type,
??? 'MR', 'Media Recovery',
??? 'RT','Redo Thread',
??? 'UN','User Name',
??? 'TX', 'Transaction',
??? 'TM', 'DML',
??? 'UL', 'PL/SQL User Lock',
??? 'DX', 'Distributed Xaction',
??? 'CF', 'Control File',
??? 'IS', 'Instance State',
??? 'FS', 'File Set',
??? 'IR', 'Instance Recovery',
??? 'ST', 'Disk Space Transaction',
??? 'TS', 'Temp Segment',
??? 'IV', 'Library Cache Invalida-tion',
??? 'LS', 'Log Start or Switch',
??? 'RW', 'Row Wait',
??? 'SQ', 'Sequence Number',
??? 'TE', 'Extend Table',
??? 'TT', 'Temp Table',
??? 'Unknown') LockType,
?c.object_name,
?decode(a.lmode,?? 0, 'None',
??????????? 1, 'Null',
??????????? 2, 'Row-S',
??????????? 3, 'Row-X',
??????????? 4, 'Share',
??????????? 5, 'S/Row-X',
??????????? 6, 'Exclusive', 'Unknown') LockMode,
?B.MACHINE,D.SPID ,b.PROGRAM
?from v$lock a,v$session b,all_objects c,V$PROCESS D
?where a.sid=b.sid and a.type in ('TM','TX')
?and c.object_id=a.id1
?AND B.PADDR=D.ADDR
解锁
alter?? system???? kill?? session?? 'sid,serial'
?
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查看当前用户的缺省表空间
SQL>select username,default_tablespace from user_users;
查看当前用户的角色
SQL>select * from user_role_privs;
查看当前用户的系统权限和表级权限
SQL>select * from user_sys_privs;
SQL>select * from user_tab_privs;
查看用户下所有的表
SQL>select * from user_tables;
?????查看用户下所有的表的列属性
?????SQL>select * from USER_TAB_COLUMNS where table_name=:table_Name;
显示用户信息(所属表空间)
select default_tablespace,temporary_tablespace?
from dba_users where username='GAME';
?
1、用户
查询所有用户：
select * from all_users.select * from dba_users?
查看当前用户的缺省表空间
SQL>select username,default_tablespace from user_users;
查看当前用户的角色
SQL>select * from user_role_privs;
查看当前用户的系统权限和表级权限
SQL>select * from user_sys_privs;
SQL>select * from user_tab_privs;
显示当前会话所具有的权限
SQL>select * from session_privs;
显示指定用户所具有的系统权限
SQL>select * from dba_sys_privs where grantee='GAME';
显示特权用户
select * from v$pwfile_users;
显示用户信息(所属表空间)
select default_tablespace,temporary_tablespace?
from dba_users where username='GAME';
显示用户的PROFILE
select profile from dba_users where username='GAME';
2、表
查看用户下所有的表
SQL>select * from user_tables;
查看名称包含log字符的表
SQL>select object_name,object_id from user_objects
where instr(object_name,'LOG')>0;
查看某表的创建时间
SQL>select object_name,created from user_objects where object_name=upper('&table_name');
查看某表的大小
SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&table_name');
查看放在Oracle的内存区里的表
SQL>select table_name,cache from user_tables where instr(cache,'Y')>0;
3、索引
查看索引个数和类别
SQL>select index_name,index_type,table_name from user_indexes order by table_name;
查看索引被索引的字段
SQL>select * from user_ind_columns where index_name=upper('&index_name');
查看索引的大小
SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&index_name');
4、序列号
查看序列号，last_number是当前值
SQL>select * from user_sequences;
5、视图
查看视图的名称
SQL>select view_name from user_views;
查看创建视图的select语句
SQL>set view_name,text_length from user_views;
SQL>set long 2000; 说明：可以根据视图的text_length值设定set long 的大小
SQL>select text from user_views where view_name=upper('&view_name');
6、同义词
查看同义词的名称
SQL>select * from user_synonyms;
7、约束条件
查看某表的约束条件
SQL>select constraint_name, constraint_type,search_condition, r_constraint_name
from user_constraints where table_name = upper('&table_name');
SQL>select c.constraint_name,c.constraint_type,cc.column_name
from user_constraints c,user_cons_columns cc
where c.owner = upper('&table_owner') and c.table_name = upper('&table_name')
and c.owner = cc.owner and c.constraint_name = cc.constraint_name
order by cc.position;
8、存储函数和过程
查看函数和过程的状态
SQL>select object_name,status from user_objects where object_type='FUNCTION';
SQL>select object_name,status from user_objects where object_type='PROCEDURE';
查看函数和过程的源代码
SQL>select text from all_source where owner=user and name=upper('&plsql_name');
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