Error establishing a database connection

Hello @ahsanmani,
If you changed your database name it means you have to change it in your code too where your db name is declared.

so go to your wp root directory and find your wp-config.php file

// ** MySQL settings – You can get this info from your web host ** //
/** The name of the database for WordPress */
define( ‘DB_NAME’, ‘your_db_new_name’ );

/** MySQL database username */
define( ‘DB_USER’, ‘root’ );

/** MySQL database password */
define( ‘DB_PASSWORD’, ‘your_db_new_password’ );

I hope this helps.

Regards,
Adejoke

I have done that. But got the error.

What version of MySQL are you using? Also, @jastrup, the MySQL “root” user should never be used for the WordPress database user.

Hi @ahsanmani,

Kindly check, you have granted all PRIVILEGES over database to newly created user from cPanel or use url https://www.digitalocean.com/community/tutorials/how-to-create-a-new-user-and-grant-permissions-in-mysql.

Thank You @sterndata.

@sterndata, I have MySQL 5.7.31 version in the server;

@mangeshnadekar15, that page suggest all command line code, not from cPanel