[keycloak-user] You cannot set autocommit during a managed transaction

Hello Everyone In our keycloak project we are using a external database in combination with the keycloak database. In our Registration formaction I need to get  some data form the external database and also write some data back. Here for I create a entity manger in my Registration factory and I know that my connection works because I successfully get data from the database but every time I try to write data back ( entityManager.getTransaction().begin(); entityManager.merge(lid); entityManager.getTransaction().commit();) to the database I get the error "You cannot set autocommit during a managed transaction". When I use entityManager.merge(lid); entityManager.flush(); to write data back I get the error " javax.persistence.TransactionRequiredException: no transaction is in progress". What is the problem here or what is the best way to write data to the database.  Daan