Oracle中的sid与servicename

在平时自己创建库的时候，习惯的将sid与servicename取同名，但是在实际生产中这两个名字很有可能不一致，再使用jdbc连接数据库的url时就需要注意区分了,否则创建不了数据库连接

//serviceName
url = "jdbc:oracle:thin:@ip:port/servicename";
//sid
url = "jdbc:oracle:thin:@ip:port:sid";

同样的，在tnsname.ora中也是要注意区分 servicename = ...sid = ....

test =
(DESCRIPTION =
	(ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.68.91)(PORT = 1521))
	(CONNECT_DATA =
	  (SERVER = DEDICATED)
	  (SERVICE_NAME = orcl)   #serviceName
#        (SID = orcl)
	)
)