To prevent a memory leak, the JDBC Driver has been forcibly unregistered

Question

I am getting this message when I run my web application. It runs fine but I get this message during shutdown.

SEVERE: A web application registered the

Answer 1

I have faced this problem when I was deploying my Grails application on AWS. This is matter of JDBC default driver org.h2 driver . As you can see this in the Datasource.groovy inside your configuration folder . As you can see below :

dataSource {
    pooled = true
    jmxExport = true
    driverClassName = "org.h2.Driver"   // make this one comment
    username = "sa"
    password = ""
}

Comment those lines wherever there is mentioned org.h2.Driver in the datasource.groovy file , if you are not using that database . Otherwise you have to download that database jar file .

Thanks .