# pt-upgrade Out of Memory

**URL:** https://forums.percona.com/t/pt-upgrade-out-of-memory/4261
**Category:** Percona Toolkit
**Created:** [June 11, 2015, 3:49pm UTC](https://forums.percona.com/t/pt-upgrade-out-of-memory/4261 "2015-06-11T15:49:14Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![valerie](https://avatars.discourse-cdn.com/v4/letter/v/ccd318/32.png) [@valerie](https://forums.percona.com/u/valerie)
#### Post date: [February 18, 2016, 12:01am UTC](https://forums.percona.com/t/pt-upgrade-out-of-memory/4261/2 "2016-02-18T00:01:52Z")

</div>

Hello. I am having the same problem. This happens with any version of pt-upgrade 2.2.\*. Perl is 5.16. OS is Centos7. What is the required perl version for pt-upgrade 2.2?

---

_[View the full topic](https://forums.percona.com/t/pt-upgrade-out-of-memory/4261)._