use of backup database read only dbspace
Using IQ 16.0 SP02 with VLDB option, I'm trying to figure out which is the purpose of using:
BACKUP DATABASE READONLY DBSPACES <xx>
and in which case it may apply to do such thing ..? (simplex , MPX, backing up a parte of the db )
Usually we use Backup full and the Incremental and manual just says"these BACKUP commands specify read-only files and dbspaces"