Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.

Have an account? Sign In

Have an account? Sign In Now

Sign In

Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.

Sign Up Here

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask question.(5)

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

ITtutoria

ITtutoria Logo ITtutoria Logo

ITtutoria Navigation

  • Python
  • Java
  • Reactjs
  • JavaScript
  • R
  • PySpark
  • MYSQL
  • Pandas
  • QA
  • C++
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA
Home/ Questions/Fixing the error: sqlite3 operationalerror unable to open database file.
Next
Answered
Alan Johnson
  • 28
Alan Johnson
Asked: May 18, 20222022-05-18T17:43:27+00:00 2022-05-18T17:43:27+00:00In: python

Fixing the error: sqlite3 operationalerror unable to open database file.

  • 28

. Advertisement .

..3..

. Advertisement .

..4..

The error

OperationalError: unable to open database file

occurred when I do: 1) an empty database. 2) the database and the unit test left behind. 3) no database at all.. I’ve tried to fix it for some days but have not resolved it yet. Can someone suggest a relevant solution to fix the sqlite3 operationalerror unable to open database file issue? Much appreciate your support.

unable to open database file
  • 2 2 Answers
  • 142 Views
  • 0 Followers
  • 0
Answer
Share
  • Facebook
  • Report

2 Answers

  • Voted
  • Oldest
  • Recent
  • Random
  1. Best Answer
    lyytutoria Expert
    2022-06-14T02:46:16+00:00Added an answer on June 14, 2022 at 2:46 am

    The cause:

    This error happens because the code which you are running in a path is not compatible with your definite path for the database. I have found another reason in your code:

    conn = lite.connect('folder_A/my_database.db')

    If you execute the code inside folder A or somewhere else that does not contain a folder A, you will get the same error. The reason is that if the database file does not exist, SQLite will creat it instead of the folder.

    Solution:

    You can fix your error by using a try-except expression to wrap your connection command and creating the folder if it increases sqlite3.OperationalError.

    import sqlite3 as lite from os import mkdir

    try:
    conn = lite.connect('folder_A/my_database.db')
    except lite.OperationalError:
    mkdir('folder_A')
    finally:
    conn = lite.connect('folder_A/my_database.db')

    In addition, you need to check:

    1. Is the application being tested on the same machine as it is being run on?

    2. Are you able to run it while it’s being tested (or have you used it with the same user)?

    3. Is the /tmp directory on the disk full? (If you’re on Unix, you can find out with df /tmp).

    4. Are the permissions on the /tmp/cer directory “odd”? (In order to handle things like the commit log, SQLLite must be able to generate new files).

    5. Is that database still used by the unit test code? (Concurrent openings are feasible with a contemporary SQLite and the correct filesystem — however /tmp is almost always on the right kind of FS, so it’s probably not that — but it’s still not recommended).

    6. Is the development code attempting to write to that database, or is something “smart” catching you off guard and leading it to attempt to open something else? (I’ve been caught out in the past by this in my code; don’t assume it won’t happen to you…).

    7. Do you run your unit tests with the same SQLite version as your production code?

    It’s possible that the production system doesn’t have a /tmp/cer directory if you’re not on the same machine. It is self-evident that this must be solved first. Similarly, if you’re running as several users on the same machine, you are likely to run into permissions/ownership issues. Another essential problem is a lack of disk space. I don’t believe it’s the last three, but if the more obvious deployment issues have been resolved, they’re worth reviewing. If none of the following apply, you’ve encountered an unusual situation and will need to provide considerably more information (it might even be a bug in SQLite, but knowing the developers of it, I believe that to be quite unlikely).

    • 0
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report
  2. Hugo Evrard
    2022-05-25T20:41:31+00:00Added an answer on May 25, 2022 at 8:41 pm

    It worked for me.

    conn = sqlite3.connect("C:\\users\\guest\\desktop\\example.db")

    Notice: In the full path, there are double slashes

    Python v2.7 for Win 7 Enterprise and Win Xp Professional

    We hope this helps.

    • 14
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report

Leave an answer
Cancel reply

You must login to add an answer.

Forgot Password?

Need An Account, Sign Up Here

Sidebar

Ask A Question
  • How to Split String by space in C++
  • How To Convert A Pandas DataFrame Column To A List
  • How to Replace Multiple Characters in A String in Python?
  • How To Remove Special Characters From String Python

Explore

  • Home
  • Tutorial

Footer

ITtutoria

ITtutoria

This website is user friendly and will facilitate transferring knowledge. It would be useful for a self-initiated learning process.

@ ITTutoria Co Ltd.

Tutorial

  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA

Legal Stuff

  • About Us
  • Terms of Use
  • Privacy Policy
  • Contact Us

DMCA.com Protection Status

Help

  • Knowledge Base
  • Support

Follow

© 2022 Ittutoria. All Rights Reserved.

Insert/edit link

Enter the destination URL

Or link to existing content

    No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.