简介:【MySQL】wait_timeout=120,是干什么的?底层原理是什么? wait_timeout是MySQL服务器等待客户端连接关闭的时间,单位为秒。当一个客户端连接到MySQL服务器时,服务器会为它分配一个线程来处理它的请求。wait_timeout参数指定服务器在检测到一个客户端连接处于非活动状态(即该客户端没有发送任何请求)时,等待多长...
| innodb_flush_log_at_timeout | 1 | | innodb_lock_wait_timeout | 120 | | innodb_rollback_on_timeout | ON | | interactive_timeout | 172800 | #global级别的interactive_timeout没有影响 | lock_wait_timeout | 31536000 | | net_read_timeout | 30 | | net_write_timeout | 60 | | ...
1 row in set (0.00 sec) mysql> SET GLOBAL innodb_lock_wait_timeout=120; Query OK, 0 rows affected (0.00 sec) mysql> SHOW GLOBAL VARIABLES LIKE 'innodb_lock_wait_timeout'; +---+---+ | Variable_name | Value | +---+---+ | innodb_lock_wait_timeout | 120 | +---+---+ 1...
而我还有一个EPG前台管理系统,用户量在300万以内,如果我wait_timeout为8小时,那我一到高峰期肯定就是死翘翘的,会有太多的TCP连接没关闭, 数据库连接数肯定是不够的。 因EPG的一个访问-一次对数据库操作量不大,查询完数据就完成ok啦,wait_timeout 设置在120s内应该是够用啦,那么相对应的c3p0中 设置小于wait_...
SETSESSIONwait_timeout=120; When thewait_timeoutsystem variable is set dynamically at runtime, its value will be reset the next time the server restarts. To make the value persist on restart, set it in a configuration file too. DETAILS ...
mysql>SET GLOBAL innodb_lock_wait_timeout=120; Query OK, 0 rows affected (0.00 sec) mysql> SHOW GLOBAL VARIABLES LIKE 'innodb_lock_wait_timeout'; +---+---+ | Variable_name | Value | +---+---+ | innodb_lock_wait_timeout
(3.00sec)+---+---+|Variable_name|Value|+---+---+|connect_timeout|10||delayed_insert_timeout|300||innodb_flush_log_at_timeout|1||innodb_lock_wait_timeout|120||innodb_rollback_on_timeout|ON||interactive_timeout|2|#session级别的interactive_timeout改变了|lock_wait_timeout|31536000||...
feat: impl PoolWaitTimeoutError (#120) Browse files Throw error when get connection wait time great than poolWaitTimeout.master (#120) v6.5.0 killagu committed Aug 12, 2024 Verified 1 parent 855094e commit 7a355d3 Showing 7 changed files with 178 additions and 10 deletions. Whitespace...
and restart mysql. If you cannot restart mysql at this time, run this: SET GLOBAL innodb_lock_wait_timeout = 120; You could also just set it for the duration of your session SET innodb_lock_wait_timeout = 120; followed by your query ...