Alvaro Herrera píše v st 06. 05. 2009 v 15:11 -0400: > Zdenek Kotala wrote: > > > If there is not another problem I suggest to use two different locks for > > vacuum and analyze. > > By itself that won't work -- see vac_update_relstats.
It says: * Note another assumption: that two VACUUMs/ANALYZEs on a table can't * run in parallel, nor can VACUUM/ANALYZE run in parallel with a * schema alteration such as adding an index, rule, or trigger. Otherwise * our updates of relhasindex etc might overwrite uncommitted updates. But what "two VACUUMs/ANALYZEs on a table" exactly means? It is not clear here if VACUUMxANALYZE parallel run is allowed or not. I also don't see explanation why it is not allowed? From code I don't see any problem here. Zdenek -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers