In various places in tefillah, we speak of G-d as having or using his "wisdom" (E.g. in Asher Yatzar and in the Hame'ir La'aretz of Shacharit.)
To understand G-d, we try to attribute human-like characteristics. With man, "wisdom" or chachmah, as I understand (no pun, here) means the ability to discern useful from useless information and knowledge.
How are we to understand G-d's attribute of "wisdom" by comparison, if, indeed, we can compare?