Do we need different versions of hibernate to connect different databases?

Do we need different versions of hibernate to connect different databases?

To communicate with another database server, you need another hibernate configuration file similar to hibernate. cfg. xml. For example, let’s say we have a MySQL database server and a Microsoft SQL database server that will be used in an application.

Can we have multiple SessionFactory in hibernate?

hibernate” package. Session factory is long live multithreaded object. Usually one session factory should be created for one database. When you have multiple databases in your application you should create multiple SessionFactory object.

Can I have two session factory in a single hibernate CFG XML?

You can’t define a configuration file that contains more than one session factory; a hibernate-configuration element can only contain one session-factory according to the dtd.

What is multi tenancy in hibernate?

Multitenancy allows multiple clients or tenants use a single resource or, in the context of this article, a single database instance. The purpose is to isolate the information each tenant needs from the shared database. In this tutorial, we’ll introduce various approaches to configuring multitenancy in Hibernate 5.

Is SessionFactory thread safe in hibernate?

The SessionFactory is a thread safe object and used by all the threads of an application. You would need one SessionFactory object per database using a separate configuration file. So, if you are using multiple databases, then you would have to create multiple SessionFactory objects.

What is interceptor in hibernate?

The Hibernate Interceptor is an interface that allows us to react to certain events within Hibernate. With such a callback, an application can intercept core Hibernate’s operations such as save, update, delete, etc. There are two ways of defining interceptors: implementing the org.

How do I query across multiple databases?

In SQL Server management studio, using, View, Registered Servers (Ctrl+Alt+G) set up the servers that you want to execute the same query across all servers for, right click the group, select new query.

How to connect to multiple databases in hibernate?

First of all, there should be different cfg.xml files for different databases. Then simply use Configuration object of the Hibernate whenever you want to connect to your second database.

What is Hibernate and how does it work?

We know Hibernate is an ORM (Object Relational Mapping) framework for the automated persistence of objects in a Java application to the tables in a relational database. Here we will assume that an application will connect to MySQL and SQLServer databases at the same time.

What are the database configuration files for hibernate?

One of these configuration files contains the database configuration information needed to contact a database server. To communicate with another database server, you need another hibernate configuration file similar to hibernate.cfg.xml.

Is there a hibernateentitypackagemanager for multiple databases?

2) There is no HibernateEntityPackageManager, as the packages can be contributed by adding more HibernateConfigurers with the same Markers. For multiple database, a marker has to be used for accessing Session or HibernateSessionManager Also you have to define a HibernateSessionManager and a Session for the secondary database in the Module class.