I'm developing an web application usign Hibernate. I can insert and delete normally but when I try to update an information, I get an java.sql.SQLException: Can't call rollback when autocommit=true .

How can I set the autocommit to false?

Hibernate disables autocommit if you use the JDBCTransactionFactory, which is the default if you don't specify anything else.

Before starting a transaction:

toggleAutoCommit = session.connection().getAutoCommit();
if (toggleAutoCommit) session.connection().setAutoCommit(false);

After transaction:

if (toggleAutoCommit) session.connection().setAutoCommit(true);

So, either your JDBC Connection doesn't return the proper value on "getAutoCommit()", which can be a bug in the JDBC driver or something else in your setup is broken. I always turn off any autocommit in the global database configuration.

Can you show us the full stack trace and verify that your JDBC driver returns the correct value on "getAutoCommit()"?