Long connection time between MySQL and JDBC

[Lilian Chase]

Hi everyone,

I have a web application running on Tomcat that accesses data from a MySQL database.

However the time taken to establish a connection is very long.

The function that I'm using to connection to the database is

String url = "jdbc:mysql://10.1.1.21/Dbname?zeroDateTimeBehavior=convertToNull";
Connection con = DriverManager.getConnection(url, user, password);

It takes an average of 9 seconds to establish the connection. Query time is <1s depending on record size.

However, running the same function from Netbeans takes less than <1s from the same machine.

Hence, I would like to know if there's additional delay or firewall accessing the MySQL from Tomcat web application as compared to a direct connection.