Research how to resolve "too many connections" in MYSQL DB. the cause of this, is when an application tries to log into MySQL it may sometimes be rejected and receive an error message saying that there are “too many connections“. This means that the maximum number of clients that may be connected to the server has been reached. Either the client will have to wait for another client to log off, or the administrator will have to increase the maximum number of connections allowed. as a part of the solution, we need to increase the maximum connection and we should ensure that your applications are closing connections to the server when they are no longer needed.