On Tue, 2020-10-27 at 17:27 +0530, Naveen Kumar wrote: > I can see my query in wait_event_type IO, wait_event CopyFileRead in pg_stat_activity, > Its been running from 4 hours, Can anyone help me understand to wait_event_type IO, > wait_event CopyFileRead, how to proceed with my query execution. That means that PostgreSQL is reading a file that it wants to copy to another file, and it it waits for the read operation to finish. If you are stuck on this for a long time, perhaps you have a file on a networked file system, and the network connection went bad. It is hard to say more without knowing what your query is and where the file resides. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com
