The following request re-enables access to emp_table, which had been set down either because of an excessive number of down regions in one of its data subtables on one of the AMPs or because someone had submitted a SET DOWN request against it.
ALTER TABLE emp_table RESET DOWN;
The following request returns an error because it attempts to alter emp_table to have fallback, and you cannot specify SET DOWN or RESET DOWN after specifying a table option.
ALTER TABLE emp_tablec, FALLBACK RESET DOWN;