java.sql.SQLException: Listener refused the connection with the following error

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      jdbc连接ORACLE数据库时出现如题错误的一种可能： 

//oracle连接标识
        String url = "jdbc:oracle:thin:@192.168.0.200:1521:orcl";

必须与

文件：oracle\product\10.2.0\db_1\network\admin\tnsnames.ora中：

RHORCL =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.200)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )

对应：@后面接相对应的HOST,PORT,SERVICE_NAME的值

java.sql.SQLException: Listener refused the connection with the following error

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原文地址：http://www.cnblogs.com/xuyadong/p/4313449.html