Reduce the size of database / system log

Hello,

I'm developing my website locally and my database is to big and my system log has 3,5 MB.
I searched and found th option to activate the log rotate, wich i had enable to clean it one time per month but the system is getting to slow and the DB to big.

How can I delete entries from the system log and do not mess with the system?

Regards

Beginning Developers

Beginning Developers

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