Netbeans Java EE SQL Driver not found

Hey I made an EJB program and I created entity classes form my SQL database. Everything worked fine and it can connect to my database, but I get this error now for some reason. Im using glassfish v3 and netbeans ide 6.8

WARNING: Can not find resource bundle for this logger.  class name that failed: com.sun.gjc.common.DataSourceObjectBuilder
SEVERE: jdbc.exc_cnfe_ds
java.lang.ClassNotFoundException: com.mysql.jdbc.jdbc2.optional.MysqlDataSource

more random errors here.

WARNING: RAR5038:U开发者_StackOverflownexpected exception while creating resource for pool mysql_carrent_rootPool. Exception : javax.resource.ResourceException: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource
WARNING: RAR5117 : Failed to obtain/create connection from connection pool [ mysql_carrent_rootPool ]. Reason : com.sun.appserv.connectors.internal.api.PoolingException: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource
WARNING: RAR5114 : Error allocating connection : [Error in allocating a connection. Cause: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource]
WARNING: Could not obtain connection metadata
java.sql.SQLException: Error in allocating a connection. Cause: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlDataSource

I dont understand why it wont find the classpath even though it made my entities from the DB and my program worked before. I didnt change anything maybe for some code, but nothing with classpaths or even the database. Thanks for your time!

It's not in the CLASSPATH. You should not assume that because something worked in one scenario that it'll be fine for another. You didn't set things up properly; believe the JVM.

Either Glassfish or NetBeans isn't doing the right thing. It's CLASSPATH - figure it out.

Is this a web app? Is the MySQL JAR in the WEB-INF/lib directory of your WAR? If not, put it there.

Does Glassfish demand that JDBC driver JARs go in a server /lib directory? If yes, put it there.

Is that driver class name correct? That's not what I use to connect to MySQL. Why do you think that's correct? Check it.