前一段时间，由于需要修改了数据库的主机名，当时修改数据库主机名使用即时生效的方法修改的，昨天公司停电，重启数据库，登录plsql就报错了 “ora-12541：TNS:无监听程序”错误主要原因就是由于我修改了主机名，导致配置文件里面的主机名和实际的主机名不相同。需要修改配置文件 /opt/oracle/product/10.2.0/db_1/network/admin这个路径下的l...

文章 2022-02-15 来自：开发者社区

连接oracle数据库出现oracle ORA-12526: TNS: 监听程序: 所有适用例程都处于受限模式

服务器被重启之后连接出错，登陆服务器 sqlplus可以连接，但是jdbc以及sqldeveloper连接报错 ORA-12526 。网上搜索到：今天使用PL/SQL远程连接oracle数据库出现oracle ORA-12526: TNS: 监听程序: 所有适用例程都处于受限模式。查了下原来之前改字符集时执行了：ALTER SYSTEM ENABLE R...

问答 2022-02-15 来自：开发者社区

连接生产环境数据库报错异常：ORA-12514: TNS:监听程序当前无法识别连接描述符，如何解决？

连接生产环境数据库报错：异常信息：ORA-12514: TNS:监听程序当前无法识别连接描述符，请问该如何解决？已排查了：1、数据库服务能Ping通；2、数据库进程也正常 3、使用sqlplus登录也失败

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