hi
SQL*dev 4.1.3.20 can't describe materialized views
but no problems when you query the materialized view.
When searching for a column using the find function in the columns-tab of the table explorer - you have to be aware of it default is case-sensitive
I think default case-insensitive would bee the most appropriate, as I do not expect anybody (well maybee 2 or 3) to use lowercase column-names.
regards Karsten