On Friday January 19 2007 2:11 am, Csaba Nagy wrote:
>
> > I afraid I don't see how any of the answers I saw discussed
> > fit a 24x7 operation. Reindex, drop index, vacuum full, ...
> > they all block production queries of one sort or another for
> > significant periods of time (minutes) on large (multi/tens
> > of GB) tables, and thus are infeasible for true 24x7
> > operations.[snip]
>
> This is not completely true, as of 8.2 there is an online
> index build, and if that could be used in a background thread
> to rebuild the index and replace the bloated one once it's
> finished, that would be a non-blocking operation which could
> be done in 24x7 situations.
Online index creation definitely helps us toward 24x7. But
wouldn't we still have to drop the old index, thus blocking
production queries?
Ed
