2017-04-10 16:49 GMT+02:00 Bill Moran <wmo...@potentialtech.com>: > > > >> On Tue, Apr 4, 2017 at 9:46 AM, Tom DalPozzo <t.dalpo...@gmail.com> > > >> wrote: > > >> > Hi, > > >> > I have a very big table (10GB). > > >> > I noticed that many WAL segments are being written when elaborating > read > > >> > only transactions like this: > > >> > select * from dati25600000000 where id >43000000 limit 1000000; > > >> > I don't understand why are there WAL writings during read only > > >> transactions. > > These are hint bits. The mechanism and behavior are known and documented: > https://wiki.postgresql.org/wiki/Hint_Bits > > -- > Bill Moran <wmo...@potentialtech.com> >
Hi, OK! Thank you very much Pupillo
