How to cache data in MySQL?
To enable the query cache, you can set the query_cache_type variable to ON in your MySQL configuration file (my. cnf). You can also set the query_cache_size variable to specify the amount of memory that the query cache should use.
How to check if MySQL is started?
If MySQL isn't running, you can take several steps to troubleshoot and get it back up and running.
- Check the Logs First (If Time Permits)
- Restart the MySQL Service Immediately.
- Verify the Configuration Files.
- Check Disk Space.
- Checking the Error Log.
- Checking the General Query Log.
- Checking the Slow Query Log.
How to get MySQL error message?
Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_error() to retrieve the error text.
How to check db collation in MySQL?
To see the default character set and collation for a given database, use these statements: USE db_name; SELECT @@character_set_database, @@collation_database; Alternatively, to display the values without changing the default database: SELECT DEFAULT_CHARACTER_SET_NAME, DEFAULT_COLLATION_NAME FROM INFORMATION_SCHEMA.
Для початку необхідно дізнатися, чи запущено MySQL на сервері. Для цього виконаємо команду service mysql status (service mysqld status для систем RHEL).
Many ways to do it – in your terminal: sudo service mysql status. or. ps aux | grep mysql. What you’re facing is probably authentication …
mysql -u root -p. Введіть пароль. Якщо авторизація пройшла успішно, то консолі відобразиться приблизно таке повідомлення: Welcome to the MySQL monitor. Commands …