Originally posted by jwu1023
Thanks for your help, stmontgo.

Another new "DBA" like me deleted all the files in dicrectory /u05/arch on the standby. So does that mean I have to create a log file with the same name? If so, could you tell me the steps of creating a log file? I do appreciate your help.

Jian
Well the thing is there was a gap detected in the sequence of archive logs to applied at the standby - namely among others /u05/arch/1_3904.dbf. The standby is not being kept current and will not be until you can retrieve the missing logs. If you cannot retrieve the missing logs you need to recerate the standby with a new backup from production.