This is one of the important post related to change or set the Fillfactor value for the existing table of the PostgreSQL.
One of our table is very busy with heavy updates and accessing by multiple clients.
I have also estimated the row size of that table which is not that much bigger, so I have decided to change Fillfactor of that table.
ALTER TABLE table_name SET ( fillfactor = 50);
VACUUM FULL table_name;
After changing the value of Fillfactor, you should execute VACUUM FULL on that particular table.
After changing the value of Fillfactor, it works only for new tuples.