What is the difference between session and transaction in hibernate?

A session is what you use to interact with the database. A transaction is used to specify boundaries for the session to operate within. Essentially, transactions prevent the database from being corrupted by only allowing a session to interact with it at one time.

What is the difference between session and SessionFactory in hibernate?

SessionFactory is a factory class for Session objects. It is available for the whole application while a Session is only available for particular transaction. Session is short-lived while SessionFactory objects are long-lived. SessionFactory provides a second level cache and Session provides a first level cache.

What is a hibernate transaction?

Transaction Interface in Hibernate In hibernate framework, we have Transaction interface that defines the unit of work. It maintains abstraction from the transaction implementation (JTA,JDBC). A transaction is associated with Session and instantiated by calling session.

What is the difference between spring transaction and hibernate transaction?

Well for starters they are both Transactions, but they encompass different concepts and components. Hibernate deals with database specific transactions, whereas spring provides a general transaction management service.

Can I reuse the Session in Hibernate?

So, how can i reuse an Hibernate Session, in the same thread, that has been previously closed? Either use the built-in ” managed ” strategy (set the current_session_context_class property to managed ) or use a custom CurrentSessionContext derived from ThreadLocalSessionContext and override ThreadLocalSessionContet.

Can Hibernate Session span many transactions?

Obviously, you can. A hibernate session is more or less a database connection and a cache for database objects. And you can have multiple successive transactions in a single database connection. More, when you use a connection pool, the connection is not closed but is recycled.

What is the difference between Session and EntityManager?

1 Answer. Session is a hibernate-specific API, EntityManager is a standardized API for JPA. You can think of the EntityManager as an adapter class that wraps Session (you can even get the Session object from an EntityManager object via the getDelegate() function).

Is Hibernate session thread-safe?

No, Session is not a thread-safe object, many threads can access it simultaneously. In other words, you can share it between threads.

Can hibernate session have multiple transactions?

A hibernate session is more or less a database connection and a cache for database objects. And you can have multiple successive transactions in a single database connection. More, when you use a connection pool, the connection is not closed but is recycled.

Does Hibernate need transaction?

Hibernate disables, or expects the application server to disable, auto-commit mode immediately. Database transactions are never optional.