查看當前用戶信息(權限、視圖、表空間....)

0、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;
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;
SELECT * FROM ALL_SYSNONYMS;
  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');
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