Subject multithreaded application
Author piotr_3m

I have an application with 4 threads that connect to local FB 2.0 RC4
server. Every one of them uses its own datamodule and TIBODatabase
component (so creates different session).

Under heavy load I get 2 kinds of exections:
1. error -519 "prepare statement identifies a prepare statement with
and open cursor"
2. Message: ISC ERROR CODE:335544727 ISC ERROR MESSAGE: Error
writing data to the connection. STATEMENT: TIBOInternalDataset:
"<TApplication>.dmObrobkaThr.DetailsQuery.IBOqrDetailsQuery." .

I searched internet, interbase and firebird groups an I foud this:

I use IBODataset decendant components, so it looks exactly like my
problem. But I dont exactly understand what "Don't use array column
definitions in your InterBase database. " means, and does it still is
true to firebird. Please clarify what shouldn't I use to avoid this
kind of exception by example.

1 more thing: the problem is much more often when i use Local
connection. I read on this group that is sholudn't matter.

Please help, I really couldnt find any solution.

Best reghards