PanditB, March 10, 2022 - 1:05 pm UTC
ORA-03150: end-of-file on communication channel for database link
ORA-02063: preceding line from db_link
receiving above command and the target database is open in read only mode. not creashed
March 11, 2022 - 4:04 pm UTC
We're not saying the whole database has crashed, just the session the database link has connected to.
In any case, the advice is the same: check the alert log on the remote database.