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;
查看用户下所有的表
SQL
>
select
*
from
user_tables;
查看用户下所有的表的列属性
SQL
>
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
=
'
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
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
'
;
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
'
);
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
'
);
来自修葺梦想
Oracle 外键查询
select
a.table_name 外键表名,a.column_name 外键列名,b.table_name 主键表名,b.column_name 主键列名
from
(
select
a.constraint_name,b.table_name,b.column_name,a.r_constraint_name
from
user_constraints a, user_cons_columns b
WHERE
a.constraint_type
=
'
R
'
and
a.constraint_name
=
b.constraint_name
) a,
(
select
distinct
a.r_constraint_name,b.table_name,b.column_name
from
user_constraints a, user_cons_columns b
WHERE
a.constraint_type
=
'
R
'
and
a.r_constraint_name
=
b.constraint_name)
b
where
a.r_constraint_name
=
b.r_constraint_name
来自http://www.sosdb.com/