Error while registering Oracle JDBC Diagnosability MBean.

我java做了个简单的登录功能，连接的oracle 11g r1数据库
dao层测试的时候没有问题，为什么会抛下面这些异常啊严重: Error while registering Oracle JDBC Diagnosability MBean.
javax.management.MalformedObjectNameException: Invalid character '
' in value part of property
at javax.management.ObjectName.construct(ObjectName.java:602)
at javax.management.ObjectName.<init>(ObjectName.java:1403)
at oracle.jdbc.driver.OracleDriver.registerMBeans(OracleDriver.java:303)
at oracle.jdbc.driver.OracleDriver$1.run(OracleDriver.java:213)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.jdbc.driver.OracleDriver.<clinit>(OracleDriver.java:209)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at cn.our.utils.OracleConnectionUtils.<clinit>(OracleConnectionUtils.java:12)
at cn.our.dao.UserDao.find(UserDao.java:65)
at cn.our.service.BusinessService.login(BusinessService.java:13)
at cn.our.utils.WebUtils.login(WebUtils.java:14)
at cn.our.web.controller.LoginServlet.doGet(LoginServlet.java:20)
at cn.our.web.controller.LoginServlet.doPost(LoginServlet.java:34)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Thread.java:619)
但是数据还能查询出来