Ruby: SQLite3::BusyException: database is locked:

Question

Ran into this error message whilst developing tonight: SQLite3::BusyException: database is locked:

I have two models:

• Podcasts have many

Answer 1

actually for me, I found killing rails help to fix this problem.

use "ps aux | grep rails" to find out ongoing rails process id. then use

"kill -9 [rails-pid]"

to kill processes.

Then it will work

Answer 2

Try wrap cycle in a single transaction:

  def create_tracks
    json = Hashie::Mash.new HTTParty.get(self.json_url)    
    Track.transaction do
      json.sections.each do |section|
        if section.section_type=="track"
          Track.create(:name=>section.track.name, :podcast_id=>self.id)
        end
      end
    end             
  end

(see Track.transaction)

Answer 3

I had the same

ActiveRecord::StatementInvalid: SQLite3::BusyException: database is locked: INSERT INTO "users" ("created_at", "email", "name", "password_digest", "updated_at") VALUES (?, ?, ?, ?, ?)"

issue. I tried every way around found in Google and I failed. The problem was solved for me when I closed my SQLite Database Browser.

Answer 4

I had the same issue. For those with SQLite Database Browser. I did not need to close SQLite Database Browser. I only had to click the "Write Changes" button. It is highlighted and needs to not be highlighted.

Answer 5

Make sure you don't have 2 guards or several consoles running. If you want make sure desperately see the "No Name's" answer above.

You can also try increasing pool:

for example: change test section in your config/database.yml as below

test:
    adapter: sqlite3
    database: db/test.sqlite3
    pool: 50
    timeout: 5000

Answer 6

You may also have enabled threads when parallelizing your tests. Remember to disable the option in test/test_helper.rb :

parallelize(workers: :number_of_processors, with: :threads)

to

parallelize(workers: :number_of_processors)

https://edgeguides.rubyonrails.org/testing.html#parallel-testing-with-threads