Subject Re: [firebird-support] Re: "Lock conversion denied" on security database.
Author Dimitry Sibiryakov
> The sizes are 3.5 MB vs 700 K. Is my security database corrupt? How can I fix it;

Most likely - no. What can say 'gstat -h' about it? You can try to
backup-restore it. And check that fb_lock_mgr (if any) works from root.