ORACLE使用者常用資料字典的查詢方法

1、使用者
查看目前使用者的預設資料表空間：SQL>select username,default_tablespace from user_users;
查看目前使用者的角色：SQL>select * from user_role_privs;
查看目前使用者的系統許可權和表級許可權
SQL>select * from user_sys_privs;
SQL>select * from user_tab_privs;

顯示當前會話所具有的許可權：SQL>select * from session_privs;
顯示指定使用者所具有的系統許可權：SQL>select * from dba_sys_privs where grantee='GAME';
顯示特權使用者：select * from v$pwfile_users;
顯示使用者資訊(所屬資料表空間)
select default_tablespace,temporary_tablespace
from dba_users where username='GAME';

顯示使用者的PROFILE ：select profile from dba_users where username='GAME';

2、表
查看使用者下所有的表 SQL>select * from user_tables;

查看名稱包含log字元的表
SQL>select object_name,object_id from user_objects  where instr(object_name,'LOG')>0;

查看某表的建立時間
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的記憶體區裡的表
SQL>select table_name,cache from user_tables where instr(cache,'Y')>0;

3、索引
查看索引個數和類別
SQL>select index_name,index_type,table_name from user_indexes order by table_name;

查看索引被索引的欄位
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、序號
查看序號，last_number是當前值
SQL>select * from user_sequences;

5、視圖
查看視圖的名稱 SQL>select view_name from user_views;

查看建立視圖的select語句
SQL>set view_name,text_length from user_views;
SQL>set long 2000; 說明：可以根據視圖的text_length值設定set long 的大小
SQL>select text from user_views where view_name=upper('&view_name');

6、同義字
查看同義字的名稱
SQL>select * from user_synonyms;

7、約束條件
查看某表的約束條件
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、儲存函數和過程
查看函數和過程的狀態
SQL>select object_name,status from user_objects where object_type='FUNCTION';
SQL>select object_name,status from user_objects where object_type='PROCEDURE';

查看函數和過程的原始碼
SQL>select text from all_source where owner=user and name=upper('&plsql_name');

轉載：http://www.javaeye.com/topic/264639