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  • JDBC连接oracle RAC数据库配置

    RAC的配置如下:

    node1:ip地址192.168.60.132,实例名:rac1,主机名:rac1

    node2:ip地址192.168.60.144,实例名:rac2,主机名:rac2

    RAC服务名为oratest

    我的应用服务器为apache+tomcat

    配置过程如下

    1、搜索了一下,发现提供的连接RAC方法很多,拷贝了如下的jdbcURL:     

    jdbc:oracle:thin:@(description=(address_list= (address=(host=192.168.60.132) (protocol=tcp)(port=1521))(address=(host=192.168.60.144)(protocol=tcp) (port=1521)) (load_balance=yes)(failover=yes))(connect_data=(service_name= oratest)))

    但是tomcat报出如下错误:

    Io 异常: NL Exception was generated

    2、又从网上google、baidu一番,虽然找到n方法,但就是连不上,总是提示这个错误;

    3、无奈之中,打开数据库tnsname.ora,发现其中的配置如下:

     oratest=

      (DESCRIPTION =

        (ADDRESS_LIST =

          (ADDRESS = (PROTOCOL = TCP)(HOST = rac1)(PORT = 1521))

          (ADDRESS = (PROTOCOL = TCP)(HOST = rac2)(PORT = 1521))

          (LOAD_BALANCE = yes)

        )

        (CONNECT_DATA =

          (SERVER = DEDICATED)

          (SERVICE_NAME = oratest)

        )

      )

    于是将jdbcUR修改成:

    jdbc:oracle:thin:@(description=(address_list= (address=(host=rac1) (protocol=tcp)(port=1521))(address=(host=rac2)(protocol=tcp) (port=1521)) (load_balance=yes)(failover=yes))(connect_data=(service_name= oratest)))

    测试一下,结果竟然成功了;

    初步认为是:数据库服务采用主机名,而在jdbcURL中采用ip地址的方式就会出现NL Exception的问题;

    建议:对于连接RAC有问题的情况,最好使用tnsnames.ora中连接字符串进行连接;

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  • 原文地址:https://www.cnblogs.com/azhqiang/p/4277193.html
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