the network adapter could not establish the connection几种也许

the network adapter could not establish the connection几种可能
1.如果是用myeclipse 的database Driver来连接的话，将MyEclipse中eclipse目录下的eclipse.ini文件，把Duser.language=en  改成 Duser.language=zh就行了.

2.防火墙拦接

3.数据库服务品监听未开启

4 地址错误 eg:
     IP--  jdbc:oracle:thin:@192.168.1.22:1521:ORCL
     包--   ojdbc14
     驱动--  oracle.jdbc.driver.OracleDriver