> Postgres-R, pgcluster, Slony-II. Some more advanced, some less. But
> certainly nothing I would send into the ring against Oracle-Grid.
Assuming that you mean Oracle Real Application Cluster (the Grid is more,
right?) I wonder if this technology technically still counts as replication.
AFAIK they do not replicate data but share a common data pool among different
servers. You still have communication overhead but you write a tuple only
once for all servers involved. Takes away a lot of overhead on a system
that's heavily written too.
Michael
--
Michael Meskes
Email: Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org)
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Go SF 49ers! Go Rhein Fire! Use Debian GNU/Linux! Use PostgreSQL
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