What is max allowed packet?
In a nutshell, max_allowed_packet is the maximum size of a MySQL network protocol packet that the server can create or read. It has a default value of 1MB (<= 5.6. 5) or 4MB (>= 5.6. 6) and a maximum size of 1GB.
Where is max_allowed_packet?
The max_allowed_packet variable can be set globally by running a query. However, if you do not change it in the my. ini file (as dragon112 suggested), the value will reset when the server restarts, even if you set it globally.
What is max_allowed_packet MariaDB?
Maximum size of max_allowed_packet is in bytes or it generates the intermediate string. … When MariaDB server or MariaDB client received the packet and the size of system variable is larger than the max_allowed_packet size, this is the main issue and it shows errors like packet size too large and closes the connection.
What is Innodb_log_file_size in MySQL?
innodb_log_file_size is the size of a log file (in bytes). There exist multiple log file for MySQL to write the data to. This particular system-variable tells the file size of one of such log files.
What is Max_connections MySQL?
By default, MySQL 5.5+ can handle up to 151 connections. This number is stored in server variable called max_connections. You can update max_connections variable to increase maximum supported connections in MySQL, provided your server has enough RAM to support the increased connections.
Where is MySQL INI file located?
ini file. The default data directory location is C:Program FilesMySQLMySQL Server 5.7data , or C:ProgramDataMysql on Windows 7 and Windows Server 2008. The C:ProgramData directory is hidden by default.
Could not run MySQL server has gone away?
The MySQL server has gone away error, means that MySQL server (mysqld) timed out and closed the connection. By default, MySQL will close connections after eight hours (28800 seconds) if nothing happens.
How do I restart MySQL?
Restart MySQL Server on Windows
First, open the Run window by using the Windows+R keyboard. Second, type services. msc and press Enter : Third, select the MySQL service and click the restart button.
Where is MySQL INI Ubuntu?
Configure MySQL server on the Ubuntu operating system
- Find the configuration files. By default, you can find the MySQL® configuration files in: /etc/mysql. …
- my. cnf configuration file. …
- Log files. …
- mysqld and mysqld_safe. …
- mysqladmin. …
- Backups. …
- Database engine. …
- Related articles.
Where is my CNF in MariaDB?
Default Option File Locations on Windows
|%MARIADB_HOME%my.cnf||Server (from MariaDB 10.6)|
|defaults-extra-file||File specified with –defaults-extra-file , if any|
How do I set wait time out in MariaDB?
The wait_timeout system variable can be set in a configuration file:
- [mariadb] wait_timeout=120.
- SET GLOBAL wait_timeout=120;
- SET SESSION wait_timeout=120;
What is Thread_cache_size in MySQL?
In the MySQL 5.7 manual, I read that the thread cache has a size determined by the thread_cache_size system variable. The default value is 0 (no caching), which causes a thread to be set up for each new connection and disposed of when the connection terminates.