Difference between save(), saveOrUpdate() and persist() in Hibernate Session

The Session interface in Hibernate provides a couple of methods to move an object from a new or transient state to a persistent state like save(), saveOrUpdate(), and persist() is used to store an object into the database, but there are some significant differences between them. The Session.save() method does an INSERT to store the object into the database and it also returns the identifier generated by the database. On the other hand, saveOrUpdate() can be used to reattach a detached object in Hibernate Session i.e. it can do INSERT or UPDATE depending upon whether an object exists in the database or not. 

Top 5 Books to Learn Hibernate for Java Developers in 2025 - Best of Lot

Hello guys, if you want to learn Hibernate and looking for the best Hibernate books to start with then you have come to the right place. In the past, I have shared the best Hibernate courses and Spring online courses, and today, I am going to share the best books to learn Hibernate for beginners. These books have been created by Hibernate experts like Gavin King, creator of Hibernate himself and it will help you to master this essential Java framework for full-stack developers. Hibernate is the leading ORM (Object to relational) framework in the Java world used to implement the persistence layer of enterprise Java applications.

Top 5 Udemy Courses to Learn Hibernate and Spring Data JPA in 2025 - Best of Lot

Hello Java programmers, if you want to learn Hibernate and Spring Data JPA, two of the leading persistence framework for enterprise Java development, and need the best resources like books, tutorials, and online courses then you have come to the right place. In the last article, I have shared the best Spring framework courses, and best Hibernate booksand today, I am going to share the best online courses to learn both Hibernate and Spring Data JPA in 2025. These are the top-quality courses from popular online learning platforms and sites like Udemy, Pluralsight, and Baeldung and are trusted by thousands of Java developers around the world to learn these essential frameworks for Java developers. 

5 Best Udemy Courses to Learn Hibernate in 2025

Hello there, if you're seeking the greatest Hibernate and JPA online courses in 2021, you've come to the correct spot. Hibernate ORM is a Java programming language object-relational mapping tool. It provides a framework for translating a relational database to an object-oriented domain model. It's an object-relational mapping (ORM) tool or platform that lets you deal just with objects while Hibernate takes care of your data. You may utilize the Hibernate framework in your project instead of developing classes using SQL to load, store, and update data using the DAO design pattern.


So, let's take a look at some f the best courses available in the market to learn Hibernate.




    5 Best Hibernate courses on Udemy in 2025

    Here are the best Udemy courses you can join to Learn Hibernate in depth. I highly recommend them to Java developers who want to upskill themselves in 2024 to 2205. 

    1. Java Persistence: Hibernate and JPA Fundamentals[UDEMY]


    rating: 4.5 out of 5
    duration: 10 hours
    instructor: Deshraj Singh Kiran
    price: $42

    This is the course for you if you're a Java programmer who wants to master Hibernate and JPA principles as well as some advanced subjects in Java Persistence with Hibernate.

    Hibernate 4.3.5. Final (and applicable updates for Hibernate 5.0) will be covered in this course, as well as how to utilize Hibernate as a JPA provider.

    You'll also study the principles of object/relational mapping, querying, cache performance, and concurrency, as well as some advanced JPA capabilities.

    The principles of Object/Relational Mapping, Querying, Caching, Performance, and Concurrency, as well as certain advanced JPA capabilities.

    The basics of First and Second Level Caching, N+1 Selects Problem & Batch Fetching, Optimistic Locking & Versioning, and Optimistic Locking & Versioning Entity Relationships, Inheritance Mapping, and Polymorphic Queries: The Basics





    2. High-Performance Java Persistence - Mach 1[Vlad Mihalcea]

    rating: 4.5 out of 5
    duration: 4 hours
    instructor: Vlad Mihalcea
    price: $99

    When you already know Hibernate and JPA and want to push your understanding of Hibernate and JPA to the next level, I recommend checking out @Vlad Mihalcea's High-Performance Java Persistence with Hibernate.

    Vlad is a Java Champion and one of the most active Hibernate ORM project committers, whose goal is to better understand the inner workings of databases and frameworks in order to improve corporate system performance.

    The following are some of the topics covered in this course:

    Best practices for logging, testing, and schema management
    Modeling of data (types, identifiers, entity mappings, inheritance)
    Processing in batches (Persistence Context Management, batch updates, bulk updates)
    Obtaining the finest techniques
    Controlling transactions and concurrency
    Best practices are being archived.

    Finally, you'll learn about sophisticated features like caching and interceptors, which are essential for experienced Java programmers. I strongly advise experienced Java developers to take this advanced Hibernate course.






    3. Hibernate and Java Persistence API (JPA) Fundamentals[UDEMY]

    rating: 4.6 out of 5
    duration: 7.5 hours
    instructor: Infinite skills
    price: $42


    This is another excellent course for learning the fundamentals of Hibernate and JPA. Object-relational mapping and Hibernate concepts are covered in this online training course.

    The basics of mapping annotations, mapping composite, and collection types, and entity relationships will be covered after that. Hibernate API, JPA API, complex mapping and settings, and criteria API are all covered in this video tutorial.

    The Hibernate query language and Java Persistence query language will also be covered, which allow you to express SQL in a database vendor-independent manner.





    4. Master Hibernate and JPA with Spring Boot in 100 Steps[UDEMY]


    rating: 4.5 out of 5
    duration: 13 hours
    instructor: In28Minutes
    price: $45


    This is a hands-on course that uses Spring and Spring Boot to teach the principles of the Java Persistence API (JPA) and the Hibernate framework. Entities, Relationships, Inheritance Mappings, and Annotations are the fundamentals of JPA and Hibernate.

    It also delves into JPA and Hibernates Relationships — One to One, Many to One, and Many to Many — as well as several techniques of querying data with JPA and Hibernate, including JPQL, Criteria API, and Native Queries.

    You'll also learn about caching and how to use Hibernate to tune the speed of your JPA application — Solve N+1 Queries Issues.






    5. Hibernate Fundamentals: Hands-On Primer With Java EE & JPA[UDEMY]


    rating: 3.8 out of 5
    duration: 3 hours
    instructor: Syez raza
    price: $45

    Another good online Hibernate training course is this one, which gives a thorough introduction to Hibernate and the notion of Object Relational Mapping (ORM).

    You'll also learn how to develop Java apps that link to a relational database using Hibernate.

    The course also covers the most important JPA annotations for mapping classes to relational models. In a nutshell, you'll learn how to use Hibernate to install, set up, and develop Java apps.

    You will learn some of the best things in hibernate and the list is as follows:

    Learn all there is to know about Hibernate and why it is so important.
    Create a Java application from the ground up in the Hibernate environment.
    Hibernate and SQL tools must be installed and configured.
    Create a Java class for persistence.
    The Hibernate XML Mapping File must be created.
    Create an XML configuration file for Hibernate.
    Access to the MyPHPadmin back-end database and test the application.





    Conclusion:
    That's all about the best Udemy courses to learn Hibernate in 2025. I highly recommend them for Java developers. So we have reviewed some of the best Hibernate courses available in the market. Decide on your own will and jump into the ocean of Hibernate and Java!

    How to fix access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set? [Solved]

    Hello and welcome to the blog post. Today we are going to take a look at another frequently encountered issue while working with Spring Boot and Hibernate. The error "Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set" usually comes when Hibernate is unable to determine the appropriate database dialect to use. This error can be fixed by setting the hibernate.dialect property in your Hibernate configuration file. In this post, we'll look at a fix for the issue where a Spring Boot applications' "hibernate.dialect" setting prevents access to dialectresolutioninfo from being null., But before that let's take a look at the Exception itself.

    Differences Between JPA, Hibernate, and MyBatis

    Hello guys Are you tired of using plain old SQL to access your database? Are you looking for a better way to manage your database interactions in Java? Well, you're in luck because JPA, Hibernate, and MyBatis are here to save the day! If you're a Java developer, you've likely come across the terms JPA, Hibernate, and MyBatis when working with databases. While they all deal with object-relational mapping (ORM), they have their own distinct approaches and features. Understanding the differences between them can help you make informed decisions when choosing which one to use for your projects.

    Difference between Hibernate, JPA, MyBatis

    Hello guys, if you are wondering what is difference between Hibernate, JPA, and MyBatis in Java world and when to use them then you have come to the right place. Earlier, I have shared Hibernate Courses, books, and Interview Questions and in this article, I will answer this popular Hibernate question from Java developer's perspective.  This article aims to give a brief overview of Hibernate, JPA, and MyBatis. Moving ahead highlights the difference between them. It also put light on which underlying technologies they use. Lastly, it provides verdicts on when to use which one among these. But, before we start with the difference between JPA, Hibernate, and MyBatis. It is important to have an understanding of these technologies first.

    Top 20 Hibernate Interview Questions with Answers for Java Programmers

    Hibernate is one of the most popular persistent frameworks in the Java world. Hibernate offers an object to relational (ORM) solution which frees Java developers from writing tedious, hard to read, and cluttered JDBC code converting SQL columns into Object properties. Apart from freeing Java developers from writing JDBC and database interaction code, Hibernate also offers the out-of-box solution on caching, proxying, and lazy loading which drastically improves the performance of your Java Web application. 

    Difference between first level and second level cache in Hibernate

    The main difference between the first level and second level cache in Hibernate is that the first level is maintained at the Session level and accessible only to the Session, while the second level cache is maintained at the SessionFactory level and available to all Sessions. This means, you can use the first-level cache to store local data, i.e. the data which is needed by the Session, and you can use the second-level cache to store global data, i.e. something which can be shared across sessions. This is also one of the frequently asked Hibernate Interview questions and accessible in both telephonic rounds as well as on the face-to-face interviews, in both fresher and experienced level interviews.

    10 points about JPA Entity Class for Hibernate Java developers.

    JPA Entity class is in core of JPA specification and its one of the most important thing a Java developer should know, while working with JPA implementations like Hibernate. Many Java programmers either not aware of these rules and best practices or doesn't pay enough attention while creating JPA entity class to end up with same mistakes e.g. equals and hashcode not working, issues with access type etc. This motivates me to hund down and write these rules


    The entity class must have a no-arg constructor. It may have other constructors as well. The no-arg constructor must be public or protected.
    The entity class must a be top-level class. An enum or interface must not not be designated as an entity.
    The entity class must not be final. No methods or persistent instance variables of the entity class may be final.
    If an entity instance is to be passed by value as a detached object (e.g., through a remote interface), the entity class must implement the Serializable interface.
    Both abstract and concrete classes can be entities. Entities may extend non-entity classes as well as entity classes, and non-entity classes may extend entity classes.

    http://stackoverflow.com/questions/6033905/create-the-perfect-jpa-entity

    Further Learning
    Introduction To Hibernate
    Spring with JPA and Hibernate
    Introduction to Spring MVC
    Java Web Fundamentals by Kevin Jones