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{kb-symptom}

We have a large number of databases:
more than 250,000 tables (660 databases, 60 Gb).

Restoring a single database was a good time to restoring.
When restoring all databases at once, the process takes too much time: 8 hours restoring and it still didn't finish.

{kb-cause}

When databases are restored individually, the process naturally takes long time. The reason is that each row must be selected and inserted.


{kb-resolution}

It is recommended to use the Files Restore function to restore large amount of databases at once. See [CDP:Restoring MySQL Instance Best Practices].


{kb-related-articles}