event_scheduler 是Off解决办法

本文介绍了如何检查和开启MySQL的事件调度器。通过执行`show VARIABLES like 'event_scheduler'`来查看当前状态,然后使用`set GLOBAL event_scheduler=on`开启。此教程适用于需要管理数据库定时任务的用户。

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在这里插入图片描述
出现如上图所示的问题解决办法,说明是事件调度器关闭了,打开即可
执行mysql 语句
1、查看事件调度器状态

show VARIABLES like'event_scheduler'

2、开启事件调度器

set GLOBAL event_scheduler=on
If you're encountering the error message "Event Scheduler: Unable to schedule event" in MySQL, there could be a few possible reasons for this issue. Here are some troubleshooting steps you can try: 1. Check if the event scheduler is enabled: Execute the following query to verify if the event scheduler is enabled: ```sql SHOW VARIABLES LIKE 'event_scheduler'; ``` If the value is set to "OFF", you can enable it by setting the `event_scheduler` variable to "ON" in your MySQL configuration file (`my.cnf` or `my.ini`). Alternatively, you can enable it dynamically by executing the following query: ```sql SET GLOBAL event_scheduler = ON; ``` 2. Verify the syntax and permissions: Ensure that the syntax of your event creation statement is correct and that you have the necessary privileges to create and schedule events. Make sure you are using a user account with the `EVENT` privilege. 3. Check event-related variables: Verify if the `event_scheduler` variable is set to "ON" and that the global `max_allowed_packet` variable has a sufficient value to accommodate your event. 4. Investigate other errors: If there are any other error messages or warnings displayed when creating or scheduling the event, carefully review them for any additional clues. 5. Restart MySQL service: In some cases, restarting the MySQL service can resolve issues related to the event scheduler. If none of these steps resolve your issue, please provide more specific details about your event creation statement and any other relevant error messages that you're encountering.
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