Re: BUG #15667: "could not truncate file" error caused deleted rowsto become visible

On Tue, Mar 05, 2019 at 06:38:02AM +0000, PG Bug reporting form wrote:
> I guess that "Permission denied" is caused by antivirus software.
> However, this error caused data inconsistency in the table.

Most likely so.  Please be very careful to disable that where Postgres
is running or apply filters.  Windows is not concurrent safe by
default when it comes to handle writes, and Postgres uses a wrapper
for open() which makes use of some concurrent-safe options when
handling files to avoid such problems.
--
Michael