Looking at the pg_checksums docs, it says:
pg_checksums checks, enables or disables data checksums in a
PostgreSQL cluster. The server must be shut down cleanly before
running pg_checksums.
Do we want to mention the new functions here that can change the
checksum status without being shut down?
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
Do not let urgent matters crowd out time for investment in the future.