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Singularity
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        • Acd
        • Azureblob
        • B2
        • Box
        • Drive
        • Dropbox
        • Fichier
        • Filefabric
        • Ftp
        • Google Cloud Storage
        • Gphotos
        • Hdfs
        • Hidrive
        • Http
        • Internetarchive
        • Jottacloud
        • Koofr / Digi Storage
          • Digistorage
          • Koofr / Digi Storage
          • Other
        • Local
        • Mailru
        • Mega
        • Netstorage
        • Onedrive
        • Oos
          • Env_auth
          • Instance_principal_auth
          • No_auth
          • Resource_principal_auth
          • User_principal_auth
        • Opendrive
        • Pcloud
        • Premiumizeme
        • Putio
        • Qingstor
        • AWS S3 and compliant
          • Aws
          • Alibaba
          • Arvancloud
          • Ceph
          • Chinamobile
          • Cloudflare
          • Digitalocean
          • Dreamhost
          • Huaweiobs
          • Ibmcos
          • Idrive
          • Ionos
          • Liara
          • Lyvecloud
          • Minio
          • Netease
          • Other
          • Qiniu
          • Rackcorp
          • Scaleway
          • Seaweedfs
          • Stackpath
          • Storj
          • Tencentcos
          • Wasabi
        • Seafile
        • Sftp
        • Sharefile
        • Sia
        • Smb
        • Storj
          • Existing
          • New
        • Sugarsync
        • Swift
        • Union
        • Uptobox
        • Webdav
        • Yandex
        • Zoho
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  • 🌐Web API Reference
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  • ❓FAQ
    • Database is locked
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  • Why Does This Happen?
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  1. FAQ

Database is locked

PreviousWallet

Last updated 1 year ago

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When using Singularity with its default database backend (SQLite3), you might encounter the "Database is locked" error message.

Why Does This Happen?

SQLite3 operates by using a file as its database. Every time a write operation is made, SQLite3 locks this file. If multiple write operations are attempted concurrently, the "Database is locked" error surfaces.

What Should You Do?

  • Automatic Retry: Singularity is designed to automatically retry operations that produce this error. Therefore, in many instances, you can safely ignore this error message.

  • Software Hang: If you believe Singularity has become unresponsive due to this error, please report it as a bug.

Production Recommendations

SQLite is suitable for development or light workloads, but it's not recommended for Production environments. For guidance on deploying Singularity in a Production environment with a more robust database backend, refer to the .

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Deploy to Production guide