Listener refused the connection with the following error:ORA-12528,TNS:listener:all appro
时间: 2023-12-19 07:07:31 浏览: 55
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这个错误是什么意思?如何解决?
这个错误表示监听程序已经无法接受更多的连接请求,所有的连接池都已经被占用。可以通过以下方法解决这个问题:
1. 增加监听程序的最大连接数。
2. 关闭一些不必要的连接,释放连接池资源。
3. 增加数据库实例的最大连接数。
4. 增加操作系统的最大进程数。
以上是一些简单的解决方法,具体的解决方案需要根据具体情况而定。
相关问题
解决数据库连接报错Listener refused the connection with the following error: ORA-12505
数据库连接报错"Listener refused the connection with the following error: ORA-12505"是由于TNS Listener无法识别连接描述符中给定的SID所引起的。这个错误通常表示数据库实例的SID无法被正确识别或连接。
解决这个问题的方法有以下几种:
1. 确认数据库实例的SID: 确保数据库实例的SID在连接描述符中正确配置。可以通过运行命令`lsnrctl services`来查看监听器中注册的数据库服务和SID。
2. 检查监听器配置: 确保监听器的配置文件(tnsnames.ora)中包含正确的数据库服务和SID。确保SID和服务与连接描述符中的信息匹配。
3. 检查监听器状态: 使用命令`lsnrctl status`来检查监听器的状态。如果监听器已停止或未运行,请启动监听器并重新测试数据库连接。
4. 检查网络连接: 确保数据库服务器和客户端之间的网络连接正常。可以使用ping命令测试网络的连通性。
5. 检查防火墙设置: 如果有防火墙存在,请确保允许数据库服务器和客户端之间的通信。
6. 使用正确的连接字符串: 确保在连接描述符中使用正确的连接字符串,包括主机名、端口号、SID和服务名等。
综上所述,解决数据库连接报错"Listener refused the connection with the following error: ORA-12505"的方法包括确认数据库实例的SID、检查监听器配置、检查监听器状态、检查网络连接、检查防火墙设置以及使用正确的连接字符串。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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Listener refused the connection with the following error:ORA-12514
ORA-12514 is an Oracle database error that indicates the listener failed to connect to the database instance. This error can occur due to a number of reasons, such as:
1. Incorrect database name or service name specified in the connection string.
2. The database instance is not running or is not registered with the listener.
3. The listener is not configured properly.
4. The database instance is configured to use a different port than the default.
To resolve this error, you can try the following steps:
1. Verify that the database instance is running and registered with the listener using the lsnrctl status command.
2. Check the TNS listener configuration file (listener.ora) to ensure that the database name or service name is correctly specified.
3. Verify that the listener is configured to listen on the correct port. You can check this by looking at the listener.ora file or by using the lsnrctl services command.
4. Ensure that the database instance is configured to use the default port (1521) or the port specified in the listener.ora file.
If none of the above steps resolve the issue, you may need to contact your database administrator for further assistance.