
NinjaTrader repair
NinjaTrader unable to open database file: repair steps before deleting anything
An “unable to open database file” error can involve access or a locked file. Preserve the error, check remaining processes and back up before repair.
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Practical guides for keeping NinjaTrader automated strategies running through crashes, disconnects, repairs, alerts, and Windows or VPS reboots.
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NinjaTrader repair
An “unable to open database file” error can involve access or a locked file. Preserve the error, check remaining processes and back up before repair.

Trade and order alerts
Configure order-filled emails separately from recovery alerts, test inbox delivery, and understand Ninja Watchdog’s upcoming SMS and WhatsApp channels.

NinjaTrader VPS
Compare NinjaTrader VPS options by workload performance, Windows startup, remote access and recovery after a planned reboot.
Monitor NinjaTrader, recover supported crashes and disconnects, and receive recovery alerts. Try Ninja Watchdog free for 30 days on the Windows computer that runs your strategies.