On Wed, May 29, 2013 at 2:26 PM, Magnus Hagander <mag...@hagander.net>wrote:
> On Wed, May 29, 2013 at 8:24 AM, Niels Kristian Schjødt > <nielskrist...@autouncle.com> wrote: > > Hi, > > > > I have a database with quite some data (millions of rows), that is > heavily updated all the time. Once a day I would like to reindex my > database (and maybe re cluster it - don't know if that's worth it yet?). I > need the database to be usable while doing this (both read and write). I > see that there is no way to REINDEX CONCURRENTLY - So what approach would > you suggest that I take on this? > > If you have the diskspaec, it's generally a good idea to do a CREATE > INDEX CONCURRENTLY, and then rename the new one into place (typically > in a transaction). (If your app, documentation or dba doesn't mind the > index changing names, you don't need to rename of course, you can just > drop the old one). > If you wish to recluster it online you can also look into pg_repack - https://github.com/reorg/pg_repack Great tool allows you to repack and reindex your database without going offline.
