"file based sort illegal before database is open"
*Cause: A query issued against a fixed table or view required a temporary
segment for sorting before the database was open. Only in-memory
sorts are supported before the database is open.
*Action: Re-phrase the query to avoid a large sort, increase the values
of the SORT_AREA_SIZE and/or SORT_AREA_RETAINED_SIZE
initialization parameters to enable the sort to be done in memory.