Error callbacks are somewhat special beasts (and yeah, I know, it's not documented properly.)

There are only certain database calls that you can use from within the callback - this is a limitation of OpenClient and of the TDS protocol, not of my code.

The correct way to do this is to set a flag in the error handler, and to check the flag after the handler returns. Unfortunately that makes for somewhat ugly code.

However, the ct_con_drop() failed warning is really not serious. You may be able to shut it up with a $SIG{__WARN__} = sub {}; in your terminate() sub.

Michael