我使用weka和oracle 11g r2作为我的数据库来存储基于id3的增量学习的决策树。配置weka和oracle之后，进行必要的编辑我得到以下错误。请帮我解决它，因为我的项目截止日期是即将推出。谢谢！!!!!!!!
in start1java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor
java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connectionin bothjava.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection