查看当前用户的缺省表空间

        SQL>select username,default_tablespace from user_users;

        查看当前用户的角色 中国

        SQL>select * from user_role_privs;

 

        查看当前用户的系统权限和表级权限 中国

        SQL>select * from user_sys_privs; 

        SQL>select * from user_tab_privs;

        查看用户下所有的表

 

        SQL>select * from user_tables; 

        显示用户信息(所属表空间)

 

        select default_tablespace,temporary_tablespace

        from dba_users where username='GAME'; 

        1、用户 

        查看当前用户的缺省表空间

 

        SQL>select username,default_tablespace from user_users;

        查看当前用户的角色 

        SQL>select * from user_role_privs;

 

        查看当前用户的系统权限和表级权限

中国

        SQL>select * from user_sys_privs; 

        SQL>select * from user_tab_privs; 

        显示当前会话所具有的权限

 

        SQL>select * from session_privs; 

        显示指定用户所具有的系统权限

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

中国

        显示特权用户 

        select * from v$pwfile_users; 

        显示用户信息(所属表空间)

 

        select default_tablespace,temporary_tablespace 

        from dba_users where username='GAME';

 

        显示用户的PROFILE

        select profile from dba_users where username='GAME';

 

        2、表

 

        查看用户下所有的表

 

        SQL>select * from user_tables; 

        查看名称包含log字符的表 

        SQL>select object_name,object_id from user_objects

 

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

        查看某表的创建时间

 

        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的内存区里的表 

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

        3、索引

 

        查看索引个数和类别

 

        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、序列号 

        查看序列号，last_number是当前值

 

        SQL>select * from user_sequences; 

        5、视图 

        查看视图的名称 

        SQL>select view_name from user_views; 

        查看创建视图的select语句

 

        SQL>set view_name,text_length from user_views;

 

        SQL>set long 2000; 说明：可以根据视图的text_length值设定set long 的大小

 

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

中国

        6、同义词

 

        查看同义词的名称

 

        SQL>select * from user_synonyms; 

        7、约束条件 

        查看某表的约束条件 

        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、存储函数和过程 

        查看函数和过程的状态

        SQL>select object_name,status from user_objects where object_type='FUNCTION'; 

        SQL>select object_name,status from user_objects where object_type='PROCEDURE';

 

        查看函数和过程的源代码 

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