Troubleshooting IndexedDB Errors

Background

PixieBrix uses the browser's on-device high-performance IndexedDB database 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

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

• 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

  • Click "Recover Databases". If you do not seen the "Extension Storage Statistics" section, contact [email protected]

    

Frequently Asked Questions

How do I determine if my Chrome profile is corrupted?

Method 1: create a new Chrome profile

• Create a new Chrome profile and install the PixieBrix extension

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

Method 2: delete your existing Chrome profile

• 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.