MySQL Error 2002 (HY000): The Solution

In this mysql tutorial we’ll tell you how to overcome the mysql error 2002 (hy000). If you’re facing the mysql error 2002, look into the following:

1) First, check if your MySQL server is running. If it is, restart the MySQL server and try again.
2) If that didn’t help, find your my.cnf location, then confirm that your my.cnf file in mysql points to the right socket file.
3) Then, check if you have the correct rights to access the mysql folder:
sudo chmod [755|777] /var/lib/mysql/mysql
4) Finally, check if the password to your MySQL server is correct. If it is but you still cannot log in, consider resetting it.
5) If nothing helps, consider re-installing your MySQL server and recovering your MySQL server data from a MySQL backup.

We hope that this sql tutorial has been helpful for you, subscribe to learn more about the database world and mysql server in general, and until next time.

Below you will find some of the most frequent sql interview questions and answers for experienced software engineers and DBAs:

Q: What is the mysql error 2002 (hy000)?
A: This mysql error frequently means that the mysqld.sock file doesn’t exist, so either install the mysqld.sock file, check my.cnf to see if you didn’t specify the wrong location, or re-install the MySQL server as a whole.

Q: What is the mysql error 1045?
A: The mysql error 1045 access denied for user ‘root’@’localhost’ (using password yes) can be caused by you entering the wrong password in your mysql server, wrong host, wrong user, insufficient permissions or SSL issues.

Q: I’m seeing the mysql error cannot connect to database server. What do I do?
A: Make sure you’re using a native password authentication within your MySQL server. Run a sql query like so:
ALTER USER ‘user’@’localhost’ IDENTIFIED WITH mysql_native_password BY ‘your_password’;

Q: I’m having a mysql error shutdown unexpectedly. What do I do?
A: Check the error log of your MySQL server.

Q: I’m seeing an error mysql error 1064 you have an error in your sql syntax. What is it?
A: Check your SQL syntax. Also, if you’re seeing this error not in your mysql server but within your application yourself, make sure you don’t provide user input straight to a database to prevent a SQL injection attack.

Q: Is there a sql tutorial that does sql injection explained?
A: We’re not sure, but the concept is that sql injection is possible once user input is passed on to a database.

Q: What is the most frequent type of a sql index?
A: The most frequent type of a SQL index is a B-Tree SQL index.

Q: I’ve heard that MyISAM performs row level locking?
A: No, that’s a common misconception.

Q: MyISAM vs InnoDB performance – which one is better and why?
A: InnoDB – all of the features that were available in MyISAM are now available in InnoDB.

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