Hi,

Imagine an app attaches to a superserver database, starts a
transaction, make an update query and when the app is about to do
another query, the connection is broken and you receive an
isc_network_error error, connection lost or similar error...

... which is the correct way to shutdown the app?

Freeing the statement allocated with isc_dsql_allocate_statement
Then calling the isc_rollback_transaction
At last detaching from database?

Or directly detaching from database?

Because despite the connection is broken I think that one should make
that calls in order to free resources.

Best regards,
Mauro H. Leggieri