Re: [firebird-support] Hiow to corrupt a Firebird database
Hi ! Em 17/1/2012 09:44, Maya Opperman escreveu: > Hi, > > I was under the impression that copying a database that is currently in use > can cause a corruption because windows xcopy might deny the Firebird server > access to that file momentarily. I was looking for an official statement on > this for a customer of mine and found this: > > http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html > > but it doesn't include the copying/zipping of a live database. Is the > documentation out of date, or is it not an issue any more? If it doen't corrupt the database because of some kind of locking it will almost certainly generate a corrupted copy, because the pages already copied could be modified to point to pages at the end of the file... Copying a live databse IS NOT an option... If you wish to copy, you should first lock the database using NBAK. Read NBAK docs to know more about it. or use gbak to "dump" the database contents to a back-up file. > Regards > Maya > > PS. Similarly, in the past, I have also been advise to keep connection > strings exactly the same from all client connections, but I can't see > anything on that either It was an issue on earlier versions of FB, don't recall when it was "fixed" but if you use 1.5 or later I don't think you will have any kind of problem... see you !
RE: [firebird-support] Hiow to corrupt a Firebird database
>> I was under the impression that copying a database that is currently >> in use can cause a corruption because windows xcopy might deny the >> Firebird server access to that file momentarily. I was looking for an >> official statement on this for a customer of mine and found this: >> http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html >> but it doesn't include the copying/zipping of a live database. Is the >> documentation out of date, or is it not an issue any more? >Not everything is listed there. >More details can be found here: "Firebird and InterBase corruptions reasons" >http://ib-aid.com/articles/item70 Oooo, lovely, thanks!
Re: [firebird-support] Hiow to corrupt a Firebird database
> I was under the impression that copying a database that is currently in use > can cause a corruption because windows xcopy might deny the Firebird server > access to that file momentarily. I was looking for an official statement on > this for a customer of mine and found this: > > http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html > > but it doesn't include the copying/zipping of a live database. Is the > documentation out of date, or is it not an issue any more? Others have replied on that already. > Regards > Maya > > PS. Similarly, in the past, I have also been advise to keep connection > strings exactly the same from all client connections, but I can't see > anything on that either AFAIR, this was an issue in InterBase 6 (or even pre V6?) which has been fixed in Firebird 1.0. -- With regards, Thomas Steinmaurer (^TS^) Firebird Technology Evangelist http://www.upscene.com/ http://www.firebirdsql.org/en/firebird-foundation/
Re: [firebird-support] Hiow to corrupt a Firebird database
Hello Maya, Not everything is listed there. More details can be found here: "Firebird and InterBase corruptions reasons" http://ib-aid.com/articles/item70 Regards, Alexey Kovyazin IBSurgeon > Hi, > > I was under the impression that copying a database that is currently > in use can cause a corruption because windows xcopy might deny the > Firebird server access to that file momentarily. I was looking for an > official statement on this for a customer of mine and found this: > > http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html > > but it doesn't include the copying/zipping of a live database. Is the > documentation out of date, or is it not an issue any more? > > Regards > Maya > > PS. Similarly, in the past, I have also been advise to keep connection > strings exactly the same from all client connections, but I can't see > anything on that either > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]
Re: [firebird-support] Hiow to corrupt a Firebird database
On Tue, 17 Jan 2012 11:44:53 +, Maya Opperman wrote: > Hi, > > I was under the impression that copying a database that is currently in > use can cause a corruption because windows xcopy might deny the Firebird > server access to that file momentarily. I was looking for an official > statement on this for a customer of mine and found this: > > http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html > > but it doesn't include the copying/zipping of a live database. Is the > documentation out of date, or is it not an issue any more? > > Regards > Maya > > PS. Similarly, in the past, I have also been advise to keep connection > strings exactly the same from all client connections, but I can't see > anything on that either I actually believe (but I am not sure) it is not the original database that you can corrupt this way, but the copy is very likely to get corrupted as it will have an inconsistent view of the database content. I do not think that the (x)copy locks the file when performing the copy. Mark
[firebird-support] Hiow to corrupt a Firebird database
Hi, I was under the impression that copying a database that is currently in use can cause a corruption because windows xcopy might deny the Firebird server access to that file momentarily. I was looking for an official statement on this for a customer of mine and found this: http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html but it doesn't include the copying/zipping of a live database. Is the documentation out of date, or is it not an issue any more? Regards Maya PS. Similarly, in the past, I have also been advise to keep connection strings exactly the same from all client connections, but I can't see anything on that either [Non-text portions of this message have been removed]
