> Thank you, Adam, your SP solution to get a "user inoffensive string"
> from a connection seems to be viable with Firebird 1.5. I'll try it.
> As you and Nando said, it would be easier with Firebird 2.0, using the
> two system functions RDB$SET_CONTEXT and RDB$GET_CONTEXT to set and get
> values as I need.
> Is FB2 already available?

It entered 'Release Candidate' phase yesterday. It can be downloaded
from www.firebirdsql.org providing the mirrors have synchronised
themselves. If RC1 is not downloadable yet I am guessing it will be by
the end of the weekend.

>Is it safe for a producer environment?
>

No. The best version for a production environment at the time of
writing is 1.5.3

You can read the notes on the official pages. Basically it is good
enough for you to install in a development sense and get a feel for it
and run your testing system against it.

I should point out that until it is a 'stable release', any problems
you encounter are firebird-devel rather than firebird-support
questions (and I wouldn't even consider posting a question there
unless you have read the release notes and readme files).

Given that the SP (adjusted to your requirements) works with both 1.5
and 2.0, I would use that in case the RC cycle extends for a long
time. You don't want to be forced to deliver your application with a
RC database engine because you developed against it and used one of
its features in your code.

Adam