Just now, I'm planning to optimize MySQL, but after modifying configuration file, MySQL can't start normally. I think it's a problem with individual parameters, but later I found that server is always stuck, so I restarted server, which found some strange things.，简单来说...

What's Happened After Restarting Server

After restarting server, I found following pr 太扎心了。 oblems: executing some basic commands will hang.

And MySQL process cannot be killed after restarting.，还行。

Before restarting, I found that previous configuration file had a problem, re were two , so I 实际上... corrected configuration file, disabled MySQL automatic startup at boot time, and n restarted .

How to Prevent Faults from Happening

According to analysis of causes of database unresponsive faults, in daily maintenance work, we must do following points: 1. Perform correct maintenance operations. Many database unresponsive faults are caused by incorrect maintenanc 这玩意儿... e operations. Avoid large-scale maintenance operations during business peak hours, such as move, adding primary and foreign key constraints, etc. which will lock tables for a long time. If indeed necessary, try to use correct operation

Let's Talk About My MySQL Optimization Plan

After server was restarted, following problems were found: executing some basic commands will hang. Very detailed MySQL database paramet 翻车了。 er optimization, all summarized here. After server was restarted, following problems were found: executing some basic commands will hang.

Why Is Database Server So Important?

Now, importance of database server has gradually emerged in campus network. However, database server is inevitably prone to failures, and destruction or loss of important da 戳到痛处了。 ta information will bring unpredictable economic losses to schools. Therefore, it is necessary to use a rapid diagnosis method to eliminate failures, and this article summarizes

Quick Troubleshooting and Solutions

Hardware failure may involve disk failure, memory failure, etc.; software problems may involve operating system, application, or database; network problems may cause server to fail to connect or data transmission anomalies.

In process of replacement, be sure to ensure that operation is standardized, and avoid causing greater losses.，说真的...

Restart Magic

Restart server

Check overall situation of server

Summary

After manually restarting 说到点子上了。 MySQL, it starts normally.

As an Oracle database DBA, in addition to handling faults, it is more important to prevent faults from occurring. 他急了。 Once database has any problems, do not act lightly, and can seek help of professional data recovery centers...

Check disk, memory