db_recovery_file_dest_size issue
Here is Oracle's answer.

Basically your options are these:


Delete transient files no longer needed for current policies.
Change something stored in the Fast Recovery Area to be stored elsewhere This could be temporarily or permanently.
Increase the db_recovery_file_dest_size to be larger than 7 GB.
Decrease your backup window or redundancy.
Change your archivelog retention policy.
Drop guarenteed restore points.