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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;

二、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的內存區里的表

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');

六、同義詞

查看同義詞的名稱

SQL>select * from user_synonyms;

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');

九、觸發器

查看觸發器

set long 50000;

set heading off;

set pagesize 2000;

select

'create or replace trigger "' ||

trigger_name || '"' || chr(10)||

decode( substr( trigger_type, 1, 1 ),

'A', 'AFTER', 'B', 'BEFORE', 'I', 'INSTEAD OF' ) ||

chr(10) ||

triggering_event || chr(10) ||

'ON "' || table_owner || '"."' ||

table_name || '"' || chr(10) ||

decode( instr( trigger_type, 'EACH ROW' ), 0, null,

'FOR EACH ROW' ) || chr(10) ,

trigger_body

from user_triggers;

更多信息請查看IT技術專欄