When the flash recovery area is enabled in Oracle, it generates a numerous benign error messages in the alert_<SID>.log file that make it difficult to read through and could trigger false alarms for customers. This solution describes how to disable the flash recovery area.
To disable the flash recovery area, use this SQL*Plus statement to change the settings on a running database:
ALTER DATABASE FLASHBACK OFF;
The database will no longer provide the space management features of the flash recovery area for the files stored in the old DB_RECOVERY_FILE_DEST location.