About a dropped archived log.

Question

Hello every body.
I have this big problem:
An archived log of my standby was dropped, so I restored that archived log at primary database and didn´t go to standby database.
I copied it to standby and I was try to register it manual:
SQL: alter database register logfile ´....´;
But a ora shows me that archived log already exists and it can´t register it.
So how can I resolve this problem?
Thanks a lot

Answer 1

First investigate that for you actually need this log for standby database recovering? Also how happen dropping ? from just OS level then that is right you will get an error.To checking execute below script from standby database
select max(sequence#) from v$archived_log where applied='YES'; If above result is bigger than from your losing archivelog sequence then do not worry else after copying this archive log from primary to standby then execute below command on standby database and apply this log
recover standby database until cancel;
/*Then apply this log and*/
shutdown immediate;
startup mount;
alter database recover managed standby database;