I
completed
multi-database support for the db_* API on the Head back in April.
Therefore, the info Jerry and Russel give above is accurate for
OpenACS 4.6.x and earlier, but not for the OpenACS Head - what will be
OpenACS 5.0.
Steve, if you need or want multi-db support in your current 4.6.x
OpenACS, it shouldn't be too hard to backport the code from the Head,
it's fairly self-contained. There changes however, were in three
different places: The acs-tcl package, the acs-bootstrap-installer
package, and the etc/config.tcl file.