The time when an instance of mysql gets started, a unique process id (pid) is assigned to it and is recorded in a file known as mysqld.pid. But while trying to mount Mysql database, you might face certain errors associated with pid file mysql including no mysql pid file found error and after which you are unable to precede the mount process. So, it becomes important to resolve this error message as soon as possible so as to access your database records. In such situations, the best is to opt for mysql repair tool.

Consider a practical situation where you are trying to mount Mysql database but you fail to do so and the following error message appears on screen:

“No MySQL pid file found”

After getting this message, the following information is displayed in error log description:

“InnoDB: Page may be an update undo log page. Page may be an index page where index id is 0 40
InnoDB: (index `PRIMARY` of table `piprd/Broadcast`) database page corruption on disk or a failed
InnoDB: file read of page 2280. You may have to recover from a backup.
InnoDB: It is also possible that your operating system has corrupted its own file cache and
InnoDB: rebooting your computer removes the error.
InnoDB: If the corrupt page is an index page you can also try to fix the corruption
InnoDB: by dumping, dropping, and reimporting the corrupt table. You can use CHECK
InnoDB: TABLE to scan your table for corruption”

Cause:

The main reason behind getting of no mysqld pid file found error is the mysql database corruption which can occur due to various reasons like unexpected shutdown of MySQLD, virus or malware attack or OS corruption.

Solution:

To fix database corruption issues and to resolve no pid file found mysql error, you can try out the commands like CHECK TABLE, REPAIR TABLE and OPTIMIZE TABLE command which collectively helps you to check, repair the corruption problems as well as optimizes it to use them easily.

But even after using mysql command line repair, the problem persists then it is beneficial to use mysql repair tool that effectively repairs the mysql tables even in case of severe corruption issues and is served as the helpful option to fix no mysqld pid file found error completely.