Hi,

Change database to be readonly. If i remember - this can be done by gfix.
And then try back it up


Regards,
Karol Bieniaszewski

----- Reply message -----
Od: "s3057043" <s3057043@...>
Do: <firebird-support@yahoogroups.com>
Temat: [firebird-support] "Corrupt" FDB
Data: wt., lut 26, 2013 04:03
Hello Group,



I have been passed on a database to review which appears to be corrupted.



It is running win 2008 R2 and Firebird 2.5.



I was passed the raw FDB file after Firebird was stopped (and the FDB renamed)



When I try to run gbak, I receive the following error:



Backup started at 26/02/2013 1:54:54 PM

gbak:creating file C:\Test\test.fbk

gbak:starting transaction

gbak: ERROR:invalid transaction handle (expecting explicit transaction start)

gbak:Exiting before completion due to errors

Backup failed!



There are no messages in Firebird.log



I tried to run gfix (with -v and -full options). gfix ran without error (but the backup still fails).



I then ran gstat -h and got the following output:



Database header page information:

Flags 0

Checksum 12345

Generation 2150891499

Page size 4096

ODS version 11.2

Oldest transaction 2147483644

Oldest active 2147483645

Oldest snapshot 2147483645

Next transaction 2147483646

Bumped transaction 1

Sequence number 0

Next attachment ID 3407803

Implementation ID 16

Shadow count 0

Page buffers 0

Next header page 0

Database dialect 3

Creation date Dec 15, 2011 14:37:36

Attributes force write



Variable header data:

Sweep interval: 20000

*END*



Those transaction IDs look suspiciously close to 2^32. Could this be the problem? If so, is there a way to fix this?



If I have not provided necessary information, please let me know and I will try and get some clarity.



Thanks in advance.



Adam











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