ORA-01126: database must be mounted in this instance and not open in any instance
PROBLEM: While enabling archive mode in ...
ORA-
ORA-38760: This database instance failed to turn on flashback database
PROBLEM: While starting the database, go...
ORA-38774: cannot disable media recovery – flashback database is enabled
PROBLEM: While disabling archive...
ORA-02095: specified initialization parameter cannot be modified
PROBLEM: While modifying the parameter...
ORA-65049: creation of local user or role is not allowed in CDB$ROOT
PROBLEM: While creating a user in root conta...
ORA-38856: cannot mark instance UNNAMED_INSTANCE as enabled
PROBLEM: We have restored a standalone d...
ORA-31617: unable to open dump file for write
PROBLEM: While taking expdp in rac database, got below...
ORA-02394: exceeded session limit on IO usage
PROBLEM: Sql query failed with ORA-02394: exceeded ...
ORA-02391: exceeded simultaneous SESSIONS_PER_USER limit
PROBLEM: While connecting to the database, ...