Hi Carel-Jan Engel , The ENV i tested is : oracle 9.2.0.4 / win2k . I placed my online redo logs of primary database on a networked drive , assuming that , even if my primary database goes down , i will have the redo logs safe and so i can manage (thought there would be some way) to recover my standby with those online redo logs . But when i tried to register this log file on the standby as : SQL > alter database register physical logfile 'd:\redo1a.log' ; ORA-16088 archive log has not been completely archived So does it mean that even if the online redo log of primary is protected , there is no way of using it to recover standby database ? Can u shed some light on this ? Regards, Prem. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------