格式一: Oracle JDBC Thin using an SID
jdbc:oracle:thin:@host:port:SID 例如: jdbc:oracle:thin:@localhost:1521:orcl
格式二: Oracle JDBC Thin using a ServiceName
jdbc:oracle:thin:@//host:port/service_name 例如: jdbc:oracle:thin:@//localhost:1521/orcl.city.com
格式三：Oracle JDBC Thin using a TNSName
jdbc:oracle:thin:@TNSName 例如: jdbc:oracle:thin:@TNS_ALIAS_NAME