Oracle数据字典常用查询
Oracle数据字典常用查询
--查看当前用户所有表及描述
select o.object_name,c.comments
from user_objects o
left outer join user_tab_comments c
on o.object_name=c.table_name
where object_type='TABLE'
and c.comments like '%项目%'
--查看当前用户所有字段信息及描述
select c.table_name,o.column_name,o.data_type,o.data_length,c.comments
from user_tab_columns o
left outer join user_col_comments c
on o.TABLE_NAME=c.table_name
and o.COLUMN_NAME=c.column_name
where o.table_name like upper('OM_ORGANIZATION%')
相关文档：
1.当你猛然间忘记通过什么视图可以查看procedure内容时，隐约记得所需的视图包含“SOUR”字段，此时查询dict/dictionary视图是最好的选择
sys@ora10g> col COMMENTS for a78
sys@ora10g>select * from dict where TABLE_NAME like '%SOUR%';
TABLE_NAME ......
oracle中connect by prior实现递归查询
收集的几条在oracle中通过connect by prior来实现递归查询
Start with...Connect By子句递归查询一般用于一个表维护树形结构的应用。
创建示例表：
CREATE TABLE TBL_TEST
(
ID NUMBER,
NAME VARCHAR2(100 BYTE),
PID NUMBER ......
Applies to:
Oracle Server - Enterprise Edition - Version: 10.1.0.5.0
This problem can occur on any platform.
Symptoms:
The issue is that the following error was raised :
ORA-00600: internal error code, arguments: [kesutlGetBindValue-2], [], [], [], [], [], [], []
The recent changes ......
对于x$的情况
SQL> grant select on sys.x$bh to t1;
grant select on sys.x$bh to t1
ERROR at line 1:
ORA-02030: can only select from fixed tables/views
对于fixed tables/views只能select
如果想把x$bh的select权限grant给其他用户怎么办呢,可以变通一下
SQL> create view xbh as select * from sys.x$ ......
先来简单的说一下ORACLE的备份方式，详细功能可以搜索一下。
一种是逻辑备份，即所谓的导出(Export)和导入(Import)命令，这种方式的优点是，能够对数据库中的每个对象进行备份，并且实现不同平台下的数据迁移，但备份的时候数据库不能是关闭的，从CMD命令� ......
