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Can ib logfile0, ib logfile 1 and ibdata 1 under mysql\data be deleted?
You can delete the iblog file0 and iblog file 1 files, but they will still be generated again after restarting the service request.

It is best not to delete ibdata 1. Although they are large, deleting them will lead to the loss of data in the database, but when the data in the database is no longer needed, it can be emptied.