--统计用户表数量
SELECT OWNER,COUNT(*) FROM ALL_TABLES GROUP BY OWNER;
--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;
-- 1、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;
-- 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(DBA)
select * from dba_sys_privs where grantee='HFMODS';
-- 2、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('HFM_TAREGT_VIEW_BK');
-- 查看某表的大小
select sum(bytes)/(1024*1024) as "size(M)" from user_segments
where segment_name=upper('HFM_TAREGT_VIEW_BK');
-- 查看放在ORACLE的内存区里的表
select table_name,cache from user_tables where instr(cache,'Y')>0;
-- 3、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');
-- 4、序列号
-- 查看序列号,last_number是当前值
select * from user_sequences;
-- 5、视图
-- 查看视图的名称
select view_name from user_views;
-- 查看创建视图的select语句
set view_name,text_length from user_views;
set long 2000; --说明:可以根据视图的text_length值设定set long 的大小
select text from user_views where view_name=upper('&view_name');
-- 6、同义词
-- 查看同义词的名称
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
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');