large database size problem?

[Garfield™]

There are only 6,000 topics on my forum site, and there are no attachments, images, etc. in these topics.

However, when I look at the post table, I see that its size is 1.3 GB. This is not normal.

There were topics on my site before, I deleted them, I deleted them permanently.

How can I optimize the post table size?
large database size problem?

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