On Fri, 2021-03-05 at 12:13 +0200, Andrus wrote: > Postgres 13.1 is installed in windows server. There are about 100 users. > > Log files contain huge number of permisson denied error messages in every day like : > > 2021-03-04 01:38:49.818 EET [4580] LOG: could not rename file "pg_wal/00000001000000050000001B": Permission denied Windows? Don't let anti-virus software mess with the data directory. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com