Subject Invalid request handle / SQLDA missing
Author Tim Gahnström
I was running an unattended weekend test of a machine containing a firbeird 1.5 database and caught three ugly exceptions.

I am connecting to FB from a VB.NET application using the FB data adapter. I

First I received one "invalid request handle" then I received two
"Dynamic SQL Error
SQL error code = -804
SQLDA missing or incorrect version, or incorrect number/type of variables"

All three errors where within one second and after that my application restarted itselfe and it worked perfectly again. It did not restart the firebird server (running on the same machine).

The errors occured on three different calls to the database so it is probably not eroneous data in the call.

Does anyone have any idea what may cause these kinds of errors?