Oracle常用数据字典

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;

 

1、用户

 

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/';

 

 

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/');