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。