Failure of duplicate - ORA -06054

Question

Hi,
After a backup, we have a duplicate script running to copy it over to other server.
Sometimes, when there is extra activity on the db and the backup takes longer, the duplicate fails with this:
RMAN-03002: failure of Duplicate Db command at 04/08/2009 03:06:52
RMAN-03015: error occurred in stored script Memory Script
RMAN-06054: media recovery requesting unknown log: thread 1 seq 35238 lowscn5968228973373
Can someone explain the meaning of this error? Is it as simple as delaying the timing of the duplicate for much later in the morning ?
Thanks,
DA

Answer 1

The short answer is probably yes, you ought to be able to confirm by querying the primary for when that log was generated.
You don't say what your script actually does, but when I've done this in the past the duplicate has been
run {
set until time '<Some well known time eg 6am>'
duplicate target to ....
}rather than
run {
duplicate target to ....
}what then you need to watch out for is when the backup fails and you spend most of the day applying yesterdays archives to the duplicate!
Niall Litchfield
http://www.orawin.info/
Dan A wrote:
Hi,
After a backup, we have a duplicate script running to copy it over to other server.
Sometimes, when there is extra activity on the db and the backup takes longer, the duplicate fails with this:
RMAN-03002: failure of Duplicate Db command at 04/08/2009 03:06:52
RMAN-03015: error occurred in stored script Memory Script
RMAN-06054: media recovery requesting unknown log: thread 1 seq 35238 lowscn5968228973373
Can someone explain the meaning of this error? Is it as simple as delaying the timing of the duplicate for much later in the morning ?
Thanks,
DA