|Message:||process name (process id) file nameThe log range read from the file “value” at offset value for error code bytes failed verification due to a range checksum mismatch. The read operation will fail with error %7. If this condition persists then please restore the logfile from a previous backup.|
You may not be able to mount an information store database.
Alternatively, you may not be be able to successfully perform an online backup
of an information store database or you may not be able to successfully complete an
online restore of an information store database.
A transaction log has become corrupted. If the problems in the log file
are only torn writes, they will be corrected by the Jet engine. If the problems
cannot be repaired, the database rejects rather than applies the data, logging
an event in the application log similar to the following:
The log range
read from the file path\logfile failed verification due to a range checksum
This issue can occur if the log mentioned in the Event has become corrupted.
Exchange cannot repair damage to log files because of factors other than torn
writes, which will be fixed automatically by the ESE engine. Hardware
failures that randomly damage a log file cannot be overcome because the obliterated data cannot be reliably reconstructed. ESE Event ID 477 indicates
damage that cannot be repaired.