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On this page
  • Background
  • Solution 1: restart the browser profile
  • Solution 2: delete local databases via the Chrome Developer Tools
  • Solution 3: manually delete IndexedDB files from the file system
  • Solution 4: recover local databases
  • Frequently Asked Questions

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  1. How To
  2. Troubleshooting

Troubleshooting IndexedDB Errors

Troubleshooting IndexedDB connection, quota, and corruption problems

PreviousTroubleshooting Network ErrorsNextTroubleshooting Browser Extension Performance and Crashes

Last updated 18 days ago

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Background

PixieBrix uses the browser's on-device high-performance to store package/mod definitions and logs.

In the Extension Console, Sidebar, and Page Editor, PixieBrix will show a banner if it's unable to connect to IndexedDB:

Additionally, PixieBrix may report one of the following errors:

  • Internal error opening backing store for IndexedDB.open

  • Failed to read large IndexedDB value

  • IndexedDB Full

  • Encountered full disk while opening backing store for indexedDB.open

Solution 1: restart the browser profile

In many cases, restarting the browser will correct the problem. Because, when Chrome restarts, it will force close all local database connections.

Solution 2: delete local databases via the Chrome Developer Tools

  • Open the PixieBrix Extension Console by either:

    • Open the PixieBrix sidebar and click the gear icon in the upper-right

    • Navigate directly to:

      • Stable Release: chrome-extension://mpjjildhmpddojocokjkgmlkkkfjnepo/options.html

      • Beta Release: chrome-extension://mpapkmgkphbggmlekkfnoilmafnbfile/options.html

  • Open the Chrome Dev Tools by either:

    • Right click on the page and select "Inspect", or:

    • Press F12

  • Click on the Applications tab

  • Under Storage > IndexedDB, for each of the following databases, select the database and click the Delete database button in the detail pane:

    • BRICK_REGISTRY

    • LOG

    • TRACE

    • telemetrydb

Solution 3: manually delete IndexedDB files from the file system

  • Locate the IndexedDB storage location:

    • Navigate to the IndexedDB internals page:

      • Stable Release: chrome://indexeddb-internals/#chrome-extension://mpjjildhmpddojocokjkgmlkkkfjnepo

      • Beta Release: chrome://indexeddb-internals/#chrome-extension://mpapkmgkphbggmlekkfnoilmafnbfile

    • Locate the database paths under "Paths"

  • Close Chrome. Closing Chrome which will cause Chrome to close all connections to the database and release it's locks on the directories/files

  • On Windows, delete the IndexedDB folders for the PixieBrix extension. For example, on Windows (replace <username> with your username):

C:\Users\<username>\AppData\Local\Google\Chrome\User%20Data\Default\IndexedDB\chromeextension_mpjildhmpddojocokjkgmlkkkfjnepo_0.indexeddb.leveldb\
C:\Users\<username>\AppData\Local\Google\Chrome\User%20Data\Default\IndexedDB\chromeextension_mpjildhmpddojocokjkgmlkkkfjnepo_0.indexeddb.blob\
  • Re-open Chrome

Solution 4: recover local databases

  • Close local database connections:

    • In a new Chrome tab, visit the IndexedDB Internals page:

      • Stable Release: chrome://indexeddb-internals/#chrome-extension://mpjjildhmpddojocokjkgmlkkkfjnepo

      • Beta Release: chrome://indexeddb-internals/#chrome-extension://mpapkmgkphbggmlekkfnoilmafnbfile

    • Click "Force Close"

  • Recover the local PixieBrix databases

    • Navigate to the Extension Console > Settings page, by either:

      • Open the Extension Console, and click "Settings" in the left side-nav, or

      • Navigate directly to: chrome-extension://mpjjildhmpddojocokjkgmlkkkfjnepo/options.html#/settings

Frequently Asked Questions

How do I determine if my Chrome profile is corrupted?

Method 1: create a new Chrome profile

  • If PixieBrix works in the the new profile, that indicates your other profile is corrupt

Method 2: delete your existing Chrome profile

Before deleting your Chrome profile, back up your bookmarks or any other information if it's not synced with your Google Account

  • Visit chrome://version/ in a new tab

  • Find "Profile Path" and copy the folder path for your profile

  • Close Chrome completely

  • In File Explorer (Windows) or Finder (Mac), open the profile path you copied

  • Delete the directory

  • Open Chrome

How do I determine if IndexedDB database connections are blocked/deadlocked?

  • In a new Chrome tab, visit:

    • Stable Release: chrome://indexeddb-internals/#chrome-extension://mpjjildhmpddojocokjkgmlkkkfjnepo

    • Beta Release: chrome://indexeddb-internals/#chrome-extension://mpapkmgkphbggmlekkfnoilmafnbfile

  • Refer to the "Open Connections:" count.

  • Chrome will also display the status of open connections, e.g., Running, Blocked, etc.

  • If a transaction is blocking other transactions, you'll see a transaction as "Running" with other transactions marked as "Blocked"

How do I fix an "Unable to create sequential file" error?

The error "IO Error: .../NNNNN.log: Unable to create sequential file" indicates Chrome is unable to create an IndexedDB transaction file. To fix the error, complete the IndexedDB recovery steps described above.

This solution requires that your organization does not restrict your access to the Chrome Developer Tools. See

If Inspect is disabled in the context menu for the page, contact your organization administrator to get access to the Chrome Dev Tools. See

These steps require the PixieBrix support team to enable Extension Storage Diagnostics for your account. Email for access before completing the steps

Click "Recover Databases". If you do not seen the "Extension Storage Statistics" section, contact

and install the PixieBrix extension

Chrome documentation
Chrome documentation
[email protected]
[email protected]
Create a new Chrome profile
IndexedDB database
Banner displayed if PixieBrix cannot connect to the on-device IndexedDB
Select each database under Storage > IndexedDB and click the "Delete database" button
Locating the IndexedDB paths on the IndexedDB internals page
Folders to delete on Windows
Click "Force Close" to force close local database connections
Click "Recover Databases" to recover the local database