Ability to disable or extend session timeout for power virtual server lpar sessions

We are using the IBM Cloud services as our DR strategy. We have a couple of large databases that would have to be restored during a DR scenario or our annual tests. These database restores require interaction and run for nearly 4 hours. Disabling session timeout would alleviate the manual monitoring of the jobs and making sure we click the screen every 15 minutes. If we lose our session, the job dies.