Question

I met a situation when I am unable to save certain objects persistently. The objects look like successfully saved ones but later I cannot find them in DB. There is no errors or notifications appearing in console (usually they do on errors). What that could be?

// inside a transactioned service method
def m1 = new Merchant(...)
assert m1.save()                // ok
assert m1.id                    // got some good id
assert Merchant.findById(m1.id) // it fails o_O

Other objects are saved normally.

Grails 2.1.1, some Oracle

Answer 1

Hibernate will typically only flush objects to the database at the end of a session. Flush the session manually with sessionFactory.currentSession.flush() or save the object with m1.save(flush: true) to force the object to be written out before the session is done.