1. The Problem | 现象 When connect to the product environment database of my company, the Navicat shows "Too many connections", that's because the concurrency reaches the connection upper threshold. I has planned to attach the Keepalive tag to the…
----查看max_user_connections 默认值 MySQL> show variables like 'max_user_connections'; +----------------------+-------+ | Variable_name | Value | +----------------------+-------+ | max_user_connections | | +----------------------+-------+ row in set (0.00…
接到报故,查看mysql数据库以下参数 1.innodb_buffer_pool_size 2.max_connections 该参数定义了数据缓冲区buffer pool大小,类似于oracle的db_cache_size mysql> show global variables like 'innodb_buffer_pool_size';+-------------------------+-----------+| Variable_name | Value …
很多开发人员都会遇见”MySQL: ERROR 1040: Too many connections”的异常情况,造成这种情况的一种原因是访问量过高,MySQL服务器抗不住,这个时候就要考虑增加从服务器分散读压力:另一种原因就是MySQL配置文件中max_connections值过小. 首先,我们来查看mysql的最大连接数: mysql> show variables like '%max_connections%'; +-----------------+-------+ | Variabl…