We use NHibernate in our application. Different processes access the
same database via their own hibernate layer: A service component and
client components.
We have notice that sometimes NHibernate does the following:
- It deletes all data in some tables.
- It set to null some foreign keys in some other tables.
- It recreates the data in the tables it had previously emptied.
- It set back the foreign keys.
Sometimes the ("unwanted" by us) deletion followed by a recreate data
"goes OK". It can take up to 30 seconds.
In some cases, I think it goes wrong during the recreation of the
data, because some records or relationships are then missing. This
deletion/recreation is very strange as it gets done on very static
tables that do not get updated in our code.
I activated the debug level for NHibernate, and I could see all the
nhibernate calls doing it, but I could not see what triggers it.
I could also see the SQL calls in the SQL profiler.
I have the following 2 questions:
- Are there ways of using NHibernate which can causes this unwanted
deletion / recreation of data?
- How can we find out the originator of the problem?
vcs
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