We are still on Oracle 11GR2.
Had a Dataguard set up between PROD -> DR, received some sequence Gap recently, tried the oracle solution :
1. Manually copy the missing *.dbf archive log from PROD to DR, also did the alter database register logfile
2. Got an error of 308 and telling me - File header corrupted
Anyone ran into the similar issue before? any advice how can I bring the DR back?