Subject AW: [firebird-support] Damaged databasae CRC
Author Steffen Heil

If you cannot copy the database (surely you stopped the server, didn't you?)
then there is something very wrong with either the hard drive or the
To be very sure I would boot the system with some "live" linux cd and try to
copy the file off that drive then. (Note: Not on the drive!)
If this fails, then the file cannot be physically read, which means that
there is no way to rescue anything.

As long as you cannot access the file itself, I highly recommend not to
consider repairing it with any kind of tool. They will surely all destroy

However, if you succeed to copy the file (with the real system being
offline), then have a closer look at things changed in last days, including
os updates and antivirus software. Note that some virus scanners lock files
completely if they found a signature... But hey, you did except your
database files from virus scan, didn't you?


-----Ursprüngliche Nachricht-----
[] Im Auftrag von Robert martin
Gesendet: Donnerstag, 11. März 2010 20:53
Betreff: [firebird-support] Damaged databasae CRC


We have just been alerted by one of our clients that there FB 2.0.x
database is reporting CRC errors. We have accessed the machine and run
chkdsk, no errors reported (we expected bad sectors) but FB backups fail
and the file cannot be copied. Usually if a DB has an issue we take a
copy of the file and use gFix to attempt recovery, however in this case
we cant even copy the file.

The database is in a different time zone and we are waiting to get
access to attempt a gfix on the main db file. I don't expect this will
work. Does anybody have any suggestions? The client informs us that
there last backup is from December !!!

Our software offers automatic backups up to 4 times a day and / or
automated offsite backups to a remote web server. The client had chosen
not to do any of this !!!!!!!!!




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