Mason Hale wrote:
> So, I'm fishing to see of there are alternatives to taking our
> production database down for 6+ hours do this upgrade. Can slony or
> wal files be of help here?
Slony can, but WAL files will not work between different versions.
> Also -- due to hardware limitations, we need to install 8.2.x on the
> same hardware 8.1.5 is currently running on. Can those two versions
> exist side-by-side?
Sure. Just set a different port and different data directory.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/