ORACLE用戶常用數據字典的查詢使用方法

查看當前用戶的缺省表空間

SQL>select username,default_tablespace from user_users;



查看當前用戶的角色

SQL>select * from user_role_privs;



查看當前用戶的系統權限和表級權限

SQL>select * from user_sys_privs;

SQL>select * from user_tab_privs;



查看用戶下所有的表

SQL>select * from user_tables;



1、用戶



查看當前用戶的缺省表空間

SQL>select username,default_tablespace from user_users;



查看當前用戶的角色

SQL>select * from user_role_privs;



查看當前用戶的系統權限和表級權限

SQL>select * from user_sys_privs;

SQL>select * from user_tab_privs;



顯示當前會話所具有的權限

SQL>select * from session_privs;



顯示指定用戶所具有的系統權限

SQL>select * from dba_sys_privs where grantee=/'GAME/';





2、表



查看用戶下所有的表

SQL>select * from user_tables;



查看名稱包含log字符的表

SQL>select object_name,object_id from user_objects

where instr(object_name,/'LOG/')>0;



查看某表的創建時間

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的內存區裏的表

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、序列號



查看序列號，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;



查看創建視圖的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、同義詞



查看同義詞的名稱

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、存儲函數和過程



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/';



查看函數和過程的源代碼

SQL>select text from all_source where owner=user and name=upper(/'&plsql_name/');