Subject RE: [firebird-support] Re: NBackup problem, causing deadlock
Author Leyne, Sean
> In the log file of the firebird, a second before stopping all users, have this
> line:
> SRVHYPERV2 Tue Jul 16 08:40:11 2013
> Database: D:\WORK\DATA.FDB
> deadlock
> internal Firebird consistency check (Can't lock alloc table for reading)
> Thereafter, the system uses the database stopped on all machines and
> process nBackup just stood, had to terminate the processes, start the
> firebird and merge the delta file.

This is a very unusual error message, you should look to post this to the Firebird Developer mailing list for quicker reply.