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There is no current database backup. This log backup cannot be used to roll forward a preceding database backup.
Processed 1 pages for database 'logtest', file 'logtest_log' on file 1.
BACKUP LOG successfully processed 1 pages in 0.078 seconds (0.019 MB/sec).
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Server: Msg 4214, Level 16, State 1, Line 1
BACKUP LOG cannot be performed because there is no current database backup.
Server: Msg 3013, Level 16, State 1, Line 1
BACKUP LOG is terminating abnormally.
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