How to Increase MySQL Connections Beyond the Default Limit of 100?

Maximizing MySQL Connections Beyond 100

By default, each socket in a MySQL Database has a connection limit of 100. However, to work with larger datasets or handle increased user traffic, it may be necessary to increase this limit. Here are two methods to expand the maximum number of connections:

Method 1: Dynamic Adjustment

To dynamically adjust the connection limit without restarting MySQL, follow these steps:

1. Connect to MySQL using the command prompt.
2. Execute the following query:

SHOW VARIABLES LIKE 'MAX_CONNECTIONS';

3. This will display the current maximum connection value.
4. To increase the limit, run the query:

SET GLOBAL MAX_CONNECTIONS = <new_limit>;

5. For instance, to set the maximum connections to 150, you can use the query:

SET GLOBAL MAX_CONNECTIONS = 150;

6. Check the updated value by executing the SHOW VARIABLES LIKE 'MAX_CONNECTIONS'; query again.

Method 2: Permanent Configuration

For permanent changes to the connection limit, you can edit the my.cnf configuration file and restart MySQL:

1. Open the my.cnf file located in your MySQL installation directory.
2. Add the following line to the file:

MAX_CONNECTIONS = <new_limit>

3. For example, to set the maximum connections to 150 permanently, add the following line:

MAX_CONNECTIONS = 150

4. Save the my.cnf file and restart MySQL using the appropriate command for your operating system (e.g., service mysql restart for Linux/Unix).

Once you have applied either method, MySQL will allow increased simultaneous connections up to the specified limit. Note that increasing the connection limit can impact system resources, so consider your application's needs and server capacity accordingly.

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