MySQL优化Timeout: Pool empty. Unable to fetch a connection in 30 seconds, none available

本文转载自查看原文 2019-03-20 12:11 2382 MySql

//查看所有进程
show processlist;

//查询是否锁表
show OPEN TABLES where In_use > 0;

//查看被锁住的
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS; 
//等待锁定
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCK_WAITS; 
kill 12041

#连接池最大连接数
spring.datasource.max-active=200
#空闲池中最大连接数
spring.datasource.max-idle=50
#空闲池中最小连接数
spring.datasource.min-idle=10
spring.datasource.initial-size=10
#连接在池中空闲最小时间后被清除
spring.datasource.min-evictable-idle-time-millis=60000
#隔多久时间清回收废弃连接
spring.datasource.time-between-eviction-runs-millis=30000
#每次调用检测池里连接的可用性，假如连接池中的连接被数据库关闭了，应用通过连接池getConnection时会重新创建
spring.datasource.testOnBorrow=true
spring.datasource.validation-query=SELECT 1
#移除被遗弃的连接
spring.datasource.remove-abandoned=true
#设置超时时间
spring.datasource.tomcat.remove-abandoned-timeout=60

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猜您在找 Mysql Cannot get a connection, pool error Timeout waiting for idle object HttpClient 的Timeout waiting for connection from pool HttpClient报错Timeout waiting for connection from pool ConnectionPoolTimeoutException: Timeout waiting for connection from pool Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool apache桥接weblogic报错：No backend server available for connection: timed out after 10 seconds or idempotent set to OFF Druid报错c.a.druid.pool.DruidAbstractDataSource : discard long time none received connection. Cannot get a connection, pool error Timeout waiting for idle object （获取不到数据库连接） HttpClient Timeout waiting for connection from pool 问题解决方案 SQLSERVER：Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.