Hi All, I had a situation where a session was getting blocked while per performing a pg_dumpall. I could see the pg_dumpall session executing a COPY command on a table in one schema. Another user session was attempting to truncate a different table in a different schema, but in the same database. This session was being blocked by the pg_dumpall session. I intend to test this further, but my understanding was that pg_dump was a non-blocking operation. I'm still on the learning curve with Postgres 8.4 (actually EnterpriseDB Advanced Server), so maybe I just need more detail on how pg_dumpall works. Is the truncate perhaps the problem, but other dml is allowed? Thanks much, Terry -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin