mysql 报错:failed to obtain jdbc connection; nested exceptionis com.alibaba.druid.pool.getconnectiontimeoutexception:


这个错误信息表明在使用阿里巴巴Druid连接池获取MySQL数据库连接时超时了。具体原因和解决方法可以参考以下几点: 1. 数据库连接池配置问题:检查Druid连接池的配置,尤其是最大连接数、最小连接数以及获取连接的超时时间(`connectTimeout`)。如果并发请求较大,而连接池中的连接数不足或获取连接超时设置过短,都可能导致该问题。需要根据实际业务负载适当调整这些参数。 2. 数据库服务器问题:确认数据库服务器是否正常运行,是否存在性能瓶颈或者网络延迟过高导致无法在规定时间内建立连接。如果是因为数据库压力过大,可以考虑优化SQL查询、增加数据库服务器资源或读写分离等策略。 3. 账号权限问题:检查数据库连接使用的账号是否有权限从远程主机建立连接,或者连接数是否达到上限。 4. 网络问题:确保应用服务器与数据库服务器之间的网络是畅通的,没有防火墙或者其他安全组规则阻止数据库连接的建立。 5. 数据库连接未释放:检查代码逻辑,确保每次使用完数据库连接后都进行了关闭操作,避免连接泄露导致连接池中无可用连接。 示例配置修改(以Spring Boot为例): ```yaml spring: datasource: druid: initial-size: 5 # 初始化连接数 min-idle: 5 # 最小空闲连接数 max-active: 20 # 最大连接数 max-wait: 60000 # 获取连接等待超时时间,单位毫秒 ``` 请根据实际情况调整以上参数。 [2024-01-12 14:42:02 | AI写代码神器 | 348点数解答]
相关提问
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- cause: org.springframework.jdbc.cannotgetjdbcconnectionexception: failed to obtain jdbc connection; nested exception is com.alibaba.druid.pool.getconnectiontimeoutexception: wait millis 6045, active 25, maxactive 700, creating 1, createelapsemillis 29424,(365点数解答 | 2024-03-06 11:26:40)269
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