Replit
database
SQLite Database Locked on Replit
SQLite database is locked and transactions timeout. Multiple processes are trying to write simultaneously, causing lock contention.
SQLite isn't designed for concurrent writes like PostgreSQL, making it unsuitable for Replit's multi-process environment.
Error Messages You Might See
database is locked
Database file is locked
Timeout waiting for database lock
SQLite error 5: database is locked
Common Causes
- Multiple Replit instances writing to same SQLite file simultaneously
- Long-running transactions holding locks
- WAL mode not enabled for SQLite
- Timeout set too low for concurrent operations
- SQLite used instead of proper database like PostgreSQL
How to Fix It
Switch to PostgreSQL (Replit's built-in option) for production. If you must use SQLite, enable WAL mode and increase transaction timeout. Ensure only one process writes to SQLite at a time. Avoid SQLite entirely for deployed Replit apps.
Real developers can help you.
Matthew Jordan
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Yovel Cohen
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Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Kingsley Omage
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Jacek Rozanski
Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004).
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Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
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David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Bastien Labelle
Full stack dev w/ 20+ years of experience
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
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Get HelpFrequently Asked Questions
Why is SQLite bad for Replit?
SQLite can't handle multiple concurrent writers. Replit deployments scale to multiple instances, causing lock contention
Should I enable WAL mode?
WAL helps but doesn't solve the underlying concurrency issue. Use PostgreSQL instead