glassfish cluster web app deployment

Question

I have create 2 java web application, one using mysql and another using oracle. i deploy those application in glassfish 4.0 server and work fine. then i create cluster in the server with 1 instance in local node and 1 instance from remote node. that cluster and the instances run successfully.

then i deploy app to the cluster, when i run web in browser problem happen,
app using mysql show error "Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource" ,
app using oracle show error "org.apache.jasper.JasperException: java.lang.NullPointerException"

I bet the cause in this matter is connectivity. i have put mysql connector and ojdbc driver in \\GlassFish 4.0\\glassfish\\domains\\domain1\\lib folder. i have change both jdbc resource target to the cluster. i can ping both connection pool too.
where do i do wrong? any help appreciated. thanks

Answer 1

mysql_connector_java.jar file mean missing in GlassFish

you can download this address

for maven

<dependency>
     <groupId>mysql</groupId>
     <artifactId>mysql-connector-java</artifactId>
     <version>5.1.35</version>
 </dependency>

Copy the file that you have downloaded GlassFish_Home/glassfish/domains/domain1/lib/ext/

and GlassFish restart for oncomplete.

reference