Hallo Franco, I had quite similar problem around 5th December 2017, try to search "lock denied" around that date.
In my case it helped to switch to SuperServer mode. (It required to change some SW to use the "TCP/IP" mode instead of the "file" access.) I remember that I promised that I would test the SuperClassic mode on our backup server but I havn't done it yet. Hope that helps, Jakub ---------- Původní e-mail ---------- Od: 'Franco Perana' franco.per...@studiocentro.it [firebird-support] < firebird-support@yahoogroups.com> Komu: firebird-support@yahoogroups.com Datum: 4. 5. 2018 3:21:55 Předmět: [firebird-support] [FB3 CS] Server stops accepting new connections - lock denied " Classic Server stops accepting new connections, while already active ones continue to work regularly. Load conditions seems irrilevant, we had a total of 4 events in less than a week, two of these during very low load conditions and two in average conditions. Error in firebird.log (this is the last event this morning, load conditions at 6 am are extremely low in our environment): ------------------------ sqlserver Thu May 3 06:17:56 2018 Database: /opt/firebird/security3.fdb page 0, page type 1 lock denied (216) sqlserver Thu May 3 06:17:57 2018 Database: page 0, page type 1 lock denied (216) ------------------------ I've also noticed there are other errors in firebird.log, but these seems not to be related to any connection problems (I've got no reports from users). I put them here anyway: ------------------------ sqlserver Wed May 2 18:43:50 2018 Database: /opt/firebird/security3.fdb page 377, page type 3 lock denied (216) sqlserver Wed May 2 18:43:52 2018 Database: /opt/firebird/security3.fdb page 377, page type 3 lock denied (216) sqlserver Wed May 2 18:43:53 2018 Database: /opt/firebird/security3.fdb page 377, page type 3 lock denied (216) ------------------------ This problem seems to be similar to this one: http://tracker.firebirdsql.org/browse/CORE-5436 which however affects Firebird on Windows. This is a big problem for us, service is going down from time to time and requires a server restart. STUDIO CENTRO SRL - Soluzioni e Servizi - www.studiocentro.it Sede: 36100 Vicenza - Via Luigi Boccherini, 13 Tel. 0444.56.31.66 Fax 0444.96.43.65 email: conta...@studiocentro.it AVVERTENZE AI SENSI DEL DLGS 196/2003 Le informazioni contenute in questo messaggio di posta elettronica o nei suoi allegati, sono da considerarsi strettamente riservate. Il loro utilizzo si consente esclusivamente al destinatario, per le finalità indicate nel messaggio stesso.. Qualora non siate il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla cancellazione dello stesso dal Vostro sistema. Costituisce comportamento contrario ai principi dettati dal Dlgs.196/2003 trattenere il messaggio, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per fini diversi. [Non-text portions of this message have been removed] "
