On 05/08/12 14:29, Udo Gaß wrote: Hi!
> Hi at all, > > I receive the message "Error opening name file" when I try to open a > certain database. scidt -N delivers "ERROR: corrupt data reading > [name].sn4". The problem is presumably caused by a system crash (not > induced by scid) while maintenance of a scid-database was running. > scid-version is 4.3 That's terrible... > Does anyone know a method for data recovery? I am afraid this cannot be repaired automagically, no. The name file contains key information that is not duplicated elsewhere in the s?4 files. You may be able to bring the file back into an internally consistent state, using a hex editor and after adding a few strategic debug printf's to the source code, but this will not guarantee that much on the integrity of the database as a whole. Typically, the name file is completely re-written from scratch (note that I am not saying that this a healthy approach). First a header is written. This header contains (a.o.) the number of name entries. After this, all name entries are appended to the file, one by one, in a loop. Most likely, the system crash happened somewhere during this loop (and you should hope it was near the end of the loop!). If so, and when opening the file today, the header will mention more name entries than that there are available in the file. Correcting the number of entries in the file header to match the number of complete entries available in the file is not too hard and will make the file consistent again. Although the first recovery stage stops here, Scid will certainly miss a few names when trying to combine games and names into something that makes sense to humans.... What maintenance operation were you running? What OS? Is there any (bad) chance that some file system "recovery" operation damaged the file even further during the reboot after the system crash? If you do not know where to start with the above, I might be able to help you. If you want, you can share the name file (I do have dropbox), and I can see what I can do. Cheers, Joost. > > Regards > Udo > > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Scid-users mailing list > Scid-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/scid-users > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Scid-users mailing list Scid-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scid-users
