oracle登录时，出现不能识别连接符异常
CR =
? (DESCRIPTION =
? ? (ADDRESS = (PROTOCOL = TCP)(HOST =localhost)(PORT = 1521))
? ? (CONNECT_DATA =
? ? ? (SERVER = DEDICATED)
? ? ? (SERVICE_NAME = CR)
? ? )
? )
?
原因是CR前面有空格，注意：CR必须是顶格写，不许有空格。
