There is a user that needs to be deleted but I need to keep his content. I want to know if there's a way to transfer the ownership of all of his content (nodes, userpoints, etc.) to another user? I tried views bulk operations, but there is no option there.
I know that I can delete the user and keep the content and give it to the Drupal anonymous user, but it´s possible to set up an specific user?
Transferring ownership of nodes is a part of Drupal core's functionality. Outside of that, any other contrib module has to provide that functionality itself; Drupal core doesn't have a concept data ownership for contrib module data.
I've rarely seen a contrib module implement a data ownership transfer feature. For popular modules they might exist but it's not a given. For example, with userpoints there submodule called userpoints_donations in the User Points Contributed modules project. However, it covers the use case of one user giving to another, not transfership from an account set to expire.
You might be able to do this on a per module basis if you look at the data tables each module stores in its .install file. It would be pretty easy to look at each table for a uid column and perform a SQL UPDATE statement that changes any uid value from X to Y. If you know all the modules in question (with their respective data tables), it's quite feasible to build your own custom VBO operation that would automatically do the SQL queries for you.
