java.sql.SQLException: Io : The Network Adapter could not establish the connection

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在win10的myeclipse运行正常，但是放到Unix系统就报这个错：

 java.sql.SQLException: Io : The Network Adapter could not establish the connection
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:438)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
        at java.sql.DriverManager.getConnection(DriverManager.java:525)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at com.asiainfo.utils.PropertiesRead.init(PropertiesRead.java:80)
        at com.asiainfo.dao.DataDaoImpl.<clinit>(DataDaoImpl.java:17)
        at com.asiainfo.service.DataServiceImpl.createFullDataDB(DataServiceImpl.java:19)
        at com.asiainfo.Start2DB.main(Start2DB.java:27)
Exception in thread "main" java.lang.NullPointerException
        at com.asiainfo.dao.DataDaoImpl.createFullDataDB(DataDaoImpl.java:31)
        at com.asiainfo.service.DataServiceImpl.createFullDataDB(DataServiceImpl.java:19)
        at com.asiainfo.Start2DB.main(Start2DB.java:27)

找到原因：
由于我打包的时候没有将jdbc.properties文件的url ，用户名和密码改为生产环境的url，用户名和密码，自以为生产的配置文件目录config下的jdbc.properties改了就可以啦，原来需要保持打包时jar包里的数据配置信息文件jdbc.properties和config目录下的数据配置信息jdbc.properties一致！

所以如果还有类似的问题发生，就去查数据的配置信息对不对！如果还不对就查Oracle的listener.ora和tnsnames.ora