hibernate program

I wrote a program in netbeans on hibernate framework to persist my data in mysql db, Everything is going fine, the main is arising when I am using the snippet session.save(newcustomer);

session--object of Session. newcustomer-- object of entity class.

Sample Snippet--

public tab_customer create(tab_customer newCustomer) {
     Transaction transaction = session.beginTransaction();
        transaction.begin();
        System.out.println(transaction.isActive());

        session.save(newCustomer);

        transaction.commit();

        return newCustomer;
    }

Its throwing error can anyone help me pl开发者_高级运维ease.

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It seems to me that you begin two transactions. Comment out transaction.begin();.