As of spring 2003, the OpenACS db_* API includes full support for
multiple databases,
via the -dbn switch.
Last I checked, the default OpenACS AOLserver config file
(etc/config.tcl
) doesn't include instructions on how to
configure things properly for that, but the comments in
packages/acs-tcl/tcl/00-database-procs.tcl
explain how.