🎯 📚 📕 FAQ ➕ KNOWN ISSUES

[kesselb]

Important Known Issues

• Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction #6899
• DeadlockException executing UPDATE oc_filecache #22482
• [NC 20+] Legacy encryption - mitigation and documentation thereof #24240
• RichDocuments built-in CODE causes significant slowdown/timeout issues richdocuments#1282

Frequently Asked Questions

• Different share link password policy password_policy#117
• (38)Function not implemented: AH00141: Could not initialize random number generator docker#1574
• 1071 Specified key was too long; max key length is 767 bytes: 🎯 📚 📕 FAQ ➕ KNOWN ISSUES #23369 (comment)
• Invalid private key for encryption app. Please update your private key password in your personal settings to recover access to your encrypted files #8546 / https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/encryption_configuration.html#invalid-private-key-for-encryption-app

Critical changes for developers & admins

• Release notes: https://docs.nextcloud.com/server/latest/admin_manual/release_notes/index.html
• App upgrade guides: https://docs.nextcloud.com/server/latest/developer_manual/app_publishing_maintenance/app_upgrade_guide/index.html

[kesselb]

1071 Specified key was too long; max key length is 767 bytes

Usually there are two ways to fix this:

A) Configure your database server to support utf8mb4 (https://docs.nextcloud.com/server/latest/admin_manual/configuration_database/mysql_4byte_support.html).

B) If the database server does not support utf8mb4, disable it by setting 'mysql.utf8mb4' => false, in config.php (emojis in filename, calendar events, etc. are not possible than and you have to accept the warning).

What happens for most people is: They change the maria/mysql configuration temporary to enable utf8mb4 but forget to write the changes to the configuration file. The next time a update is installed the sql server is restarted and the temporary configuration changes are lost. Some weeks later they try to upgrade Nextcloud and run into those utf8mb4 errors again.

Original report: #15058

[pierreozoux]

@kesselb can I clean all the closed things? and the resolved questions, and the changelog of eol releases?
(i'm passing by, and have the rights to do so, and I think it would be helpful, but don't want to do mistakes :) )

[kesselb]

@pierreozoux sure and thanks for your help 👍