ORA-16098: Primary database has been shut

admin

ORA-16098: Primarydatabase has been shut down to prevent data loss.
Cause: The primary database was shut down because it wasoperating in
maximum protection mode and no suitable standby databases were available to
protect the primary database from data loss.
Action: Diagnoseand correct whatever errors exist in the configuration or
configure the primary database for maximum availability or maximum
performance mode.