Alec Swan schrieb am 01.06.2012 um 10:16 (-0600):

> I verified that FIREBIRD_TMP environment variable can be used to
> control where temporary files are written. But TempDirectories in
> firebird.conf seems to have no effect with or without FIREBIRD_TMP env
> var set. Is TempDirectories setting broken in FB 2.5? Does it have no
> effect on embedded FB version?

Doesn't sound exactly relevant for the issue you're facing, but maybe
you can make sense of the discussion and so gain some insights:

TempDirectories parameter in firebird.conf ignored by global temporary
tables - http://tracker.firebirdsql.org/browse/CORE-1241 - 03/May/07

Michael