相关疑难解决方法(0)

我想按时间排序,但似乎无法做到这一点？

mysql> show processlist;
+--------+-------------+--------------------+------+---------+--------+----------------------------------+------------------------------------------------------------------------------------------------------+
| Id     | User        | Host               | db   | Command | Time   | State                            | Info                                                                                                 |
+--------+-------------+--------------------+------+---------+--------+----------------------------------+------------------------------------------------------------------------------------------------------+
|      1 | system user |                    | NULL | Connect | 226953 | Waiting for master to send event | NULL                                                                                                 | 
|      2 | system user |                    | v3   | Connect |  35042 | Locked                           | update postings a
                                left join cities b on b.id=a.job_city_id
                                left join states h on h.id=b.stat | 
| 313888 | irnadmin …

我有一个错误已经困扰了很长一段时间,但仍然没有解决方案

每当我收到:

2018-07-16 11:21:27,815 [Thread-4] WARN spi.SqlExceptionHelper - SQL Error:0,SQLState:08S01 2018-07-16 11:21:27,815 [Thread-4] ERROR spi.SqlExceptionHelper - Communications link失败

从服务器成功收到的最后一个数据包是197,301毫秒.成功发送到服务器的最后一个数据包是197,301毫秒.

该应用程序似乎永远不会重新连接.即使这是我的数据源配置(它是外部配置):

dataSource.dbCreate=none
dataSource.driverClassName=com.mysql.jdbc.Driver
dataSource.url=jdbc:mysql://****/*****?autoReconnect=true&failOverReadOnly=false&maxReconnects=10
dataSource.username=***
dataSource.password=******
dataSource.properties.maxActive = 50
dataSource.properties.maxIdle = 25
dataSource.properties.minIdle = 1
dataSource.properties.initialSize = 1
dataSource.properties.numTestsPerEvictionRun = 3
dataSource.properties.maxWait = 10000
dataSource.properties.testOnBorrow = true
dataSource.properties.testWhileIdle = true
dataSource.properties.testOnReturn = true
dataSource.properties.validationQuery = "select now()"
dataSource.properties.minEvictableIdleTimeMillis = 300000
dataSource.properties.timeBetweenEvictionRunsMillis = 300000

我在这个问题上看到了几个问题,但实际上并没有为我解决这个问题.

注意:我只是想强调这种情况很少发生,所以我不是要解决链接连接失败的问题,我只是想在重试后重新连接时再这样,系统不会挂起(另一个C进程句柄)这足以让我怀疑问题出在Hibernate或Grails上)

这些是我的mysql配置

[client]
port=3306
socket=/data/db/mysql/mysql.sock

[mysqld]
port=3306
datadir=/data/db/mysql
socket=/data/db/mysql/mysql.sock
log-bin=/data/db/mysql/mysql-bin
binlog_format=row
user=mysql
# Disabling symbolic-links is recommended …