"Daniel Cristian Cruz" <danielcristian@gmail.com> writes:
> I had a problem today, where pg_dump was locking a concurrent DROP TABLE,
> and it was another table, not the table in the COPY running. Is it normal?
Yes. pg_dump acquires ACCESS SHARE lock on all the tables it's
intending to dump. Without that it couldn't guarantee a consistent
dump.
regards, tom lane