Is it possible to use Hibernate's capabilities to control transaction levels?

Hibernate, as a JPA implementation, provides basic transaction management tools through EntityTransaction but does not contain its own advanced mechanism for controlling transaction isolation levels.

Transaction isolation levels are usually controlled at the database and JDBC driver level. Hibernate allows setting the isolation level through connection settings or via JDBC API but does not manage them directly.

For managing transactions and their levels in Java applications, external frameworks such as Spring Transaction Management are often used, which integrate with Hibernate and allow setting isolation levels, rollback behavior, and other parameters.

Example of setting the isolation level via JDBC:

Session session = sessionFactory.openSession();
session.doWork(connection -> {
    connection.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
});
Transaction tx = session.beginTransaction();
// operations
tx.commit();
session.close();

Thus, Hibernate provides basic tools for working with transactions, but control of isolation levels is usually implemented through connection settings or external tools.