java.sql.SQLException: Error in allocating a connection. Cause: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource Error Code: 0

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    Root Cause Analysis

    1. java.sql.SQLException

      Error in allocating a connection. Cause: Class name is wrong or classpath is not set for : com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource Error Code: 0

      at oracle.toplink.essentials.exceptions.DatabaseException.sqlException()
    2. oracle.toplink.essentials
      DatabaseException.sqlException
      1. oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:305)
      1 frame