On Tue, Mar 9, 2021 at 9:43 PM Andrus <kobruleht2@xxxxxx> wrote: > > Any hints in Windows event viewer? Events occurring at the same time showing up there. > > Looked into Administrative Events/Custom views and few others. There are no messages about this. Windowsi perfomance monitor and Filemon show files opened by process. > > How to do reverse: log processes and threads which use files in pg_wal directory ? Maybe this does the reverse? https://docs.microsoft.com/en-us/sysinternals/downloads/handle