一、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
SQL> select * from user_sys_privs;
SQL> select * from user_tab_privs;
二、表
查看用户下所有的表
SQL> select * from user_tables;
select table_ name 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;
三、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');
四、序列号
查看序列号,last_number是当前值
SQL> select * from user_sequences;
五、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');
六、同义词
查看同义词的名称
SQL> select * from user_synonyms;
七、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;
八、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');
九、触发器
查看触发器
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') ¦ ¦
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;