Re: large matview log, does it lock base table when dropping?

Have you tried

alter materialized view log on *master* enable row movement;

alter materialized view log on *master* shrink size;

This is supposed to be very DML friendly.  I haven't tested it for locks but
it's supposed to only have row locks on data in the log.  It could take a
while for 100G though.

Other related posts: