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Error Backup - Failed to prepare database

Posted: Tue 14. Oct 2025, 18:55
by kurgans
Good afternoon, friends.

First, I apologize for my poor English. I only speak Spanish and use a web translator.

Thank you for your understanding.

Today, while looking at a machine, I realized that not all databases are included in the backup that I have scheduled as administrator. I tried to do the backups with mysqldump, and it did them correctly.
I looked for an error in the backup logs and found nothing.
I checked the databases and found nothing that could help me identify the problem.

Has anyone else had a similar experience or know how I can find out more about what is happening with this SQL? I have other similar ones without problems, larger ones, and only this one has problems.

Thank you.

Re: Error Backup - Failed to prepare database

Posted: Tue 14. Oct 2025, 19:15
by Tobi
Please open a bug report and provide more informations.
Thank you!

posting.php?mode=post&f=12

Re: Error Backup - Failed to prepare database

Posted: Wed 15. Oct 2025, 10:10
by Alexander
When you provide additional information in the new thread, please also attach the following information.

Please log into your database and select the database with the error. Now perform the following SQL commands and attach the results:

Code: Select all

SHOW TABLE STATUS;

Code: Select all

SHOW WARNINGS;