Mark Fletcher wrote: > Hi All, > > Postgres 9.6.5. We run several logical replication processes off our main > postgres server. What we've noticed is that schema changes seem to block > until we halt the logical replication processes. For example, I just did a > 'DROP INDEX CONCURRENTLY' command, and it just sat there until I stopped > the logical replication processes (I did not have to drop the logical > replication slots). What sort of logical replication are you running? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services