> Best practice for this sort of thing is considered to be to run the two > Postgres instances under different user IDs. That avoids them thinking > that the other one's lock files are relevant, and it provides an extra > layer of security against possible conflicts between the two instances. > > regards, tom lane
Thanks, an interesting notice. I already did changes in start script to check instance by pg_ctl status and delete lock file if status<>0. But your recommendation is looked better.
