ORACLE 查看當前用戶信息(用戶,表視圖,索引,表空間,同義詞,存儲過程,約束條件)

一、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;

　　顯示當前會話所具備的權限

　　SQL>select * from session_privs;

　　顯示指定用戶所具備的系統權限

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

　　二、表

　　查看用戶下全部的表

　　SQL>select * from user_tables;

SELECT * FROM ALL_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的內存區裏的表

　　SQL>select table_name,cache from user_tables where instr(cache,'Y')>0;

　　三、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');

　　四、序列號

　　查看序列號，last_number是當前值

　　SQL>select * from user_sequences;

　　五、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：能夠根據視圖的text_length值設定set long 的大小

　　SQL>select text from user_views where view_name=upper('&view_name');

　　六、同義詞

　　查看同義詞的名稱

　　SQL>select * from user_synonyms;

SELECT * FROM ALL_SYSNONYMS;

　　七、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;

　　八、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');