表
查看用户下所有的表
select * from user_tables;
查看名称包含log字符的表
select object_name,object_id from user_objects where instr(object_name,'LOG')>0;
查看某表的创建时间
select object_name,created from user_objects where object_name=upper('&table_name');
查看某表的大小
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
select table_name,cache from user_tables where instr(cache,'Y')>0;
查看同义词的名称
select * from user_synonyms;
查看序列号，last_number是当前值
select * from user_sequences;
索引
查看索引个数和类别
select index_name,index_type,table_name from user_indexes order by table_name;
查看索引被索引的字段
select * from user_ind_columns where index_name=upper('&index_name');
查看索引的大小
select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('&index_name');
用户
查看当前用户的缺省表空间
select username,default_tablespace from user_users;
查看当前用户的角色
select * from user_role_privs;
查看当前用户的系统权限和表级权限select * from user_sys_privs;
select * from user_tab_privs;
查看用户下所有的表
select * from user_tables;
查看用户下所有的表的列属性
select * from USER_TAB_COLUMNS where table_name=:table_Name;
显示用户信息(所属表空间)
select default_tablespace,temporary_tablespace from dba_users where username='test'
查看当前用户的缺省表空间
select username,default_tablespace from user_users;
显示当前会话所具有的权限
select * from session_privs;
显示指定用户所具有的系统权限
select * from dba_sys_privs where grantee='DEMO1';
显示特权用户
select * from v$pwfile_users;
显示用户的PROFILE
select profile from dba_users where username='GAME';
约束条件
查看某表的约束条件
select constraint_name, constraint_type,search_condition, r_constraint_name
from user_constraints where table_name = upper('&table_name');
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;存储函数和过程
查看函数和过程的状态
select object_name,status from user_objects where object_type='FUNCTION';
select object_name,status from user_objects where object_type='PROCEDURE';
查看函数和过程的源代码
select text from all_source where owner=user and name=upper('&plsql_name')
