oracle error- ORA-00395: online logs for the clone database must be renamed

Oracle error

ORA-00395:	online logs for the clone database must be renamed
Cause:	A clone database open forces logfile renaming to avoid overwriting the primary logfiles
Action:	Rename the logfiles manually or using the log_file_name_convert initialization parameter

oracle error- ORA-00394: online log reused while attempting to archive it

Oracle error

ORA-00394:	online log reused while attempting to archive it
Cause:	It has been detected that an online log that is being archived has been reused
Action:	Cannot archive the logfile anymore since it has been overwritten

oracle error- ORA-00393: log string of thread string is needed for recovery of offline datafiles

Oracle error

ORA-00393:	log string of thread string is needed for recovery of offline datafiles
Cause:	Log cannot be cleared because the redo in it is needed to recover offline datafiles. It has not been archived so there is no other copy available. If the log is cleared the tablespaces containing the files will have to be dropped.
Action:	Archive the log then repeat the clear command. If archiving is not possible, and dropping the tablespaces is acceptible, then add the clause UNRECOVERABLE DATAFILE at the end of the clear command.