Hello, I am glad to be here, here is my first question in Inscape forum.

When an object is near to another, there is a magnetic or adhesive effect. How can I disable it?

Hi, welcome to the forum.

The term you're looking for is 'snapping' and, if you have the standard toolbar setup, you can turn if off via the icons at the right hand side. See attached screenshot.

Yes, thank you very much, this was useful.