ORA-00260: cannot find online log sequence string
for thread string.
Cause: The log sequence number supplied to the archival command does not
match any of the online logs for the thread. The log might have been reused for
another sequence number, it might have been dropped, the sequence number might
be greater than the current log sequence number, or the thread might not have
any logs.
Action: Check the ARCHIVE statement, then specify a valid log sequence
number. Specify a valid log sequence number.