# Is it possible to change users SSO's external\_id after a DB migration? **URL:** \ **Category:** Product Support\ **Created:** [May 4, 2017, 10:57am UTC](https://meta.discourse.org/t/is-it-possible-to-change-users-ssos-external-id-after-a-db-migration/62099 "2017-05-04T10:57:02Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![caub](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/caub/32/121044_2.png) [@caub](https://meta.discourse.org/u/caub)\ **Post date:** [May 4, 2017, 10:57am UTC](https://meta.discourse.org/t/is-it-possible-to-change-users-ssos-external-id-after-a-db-migration/62099/1 "2017-05-04T10:57:02Z")
First I had issues with the external\_id field on SSO, because they were all initially strings of length 16, and later I stored 24chars strings, but it completely messed up, you could get logged under a different user, it seems it cropped the external\_id length, but that was hard to debug. So I make sure to keep external\_id with the same length, it’s not really practical, why not using a TEXT column type for it? And my question is also, can I update the external\_id of existing users, after doing a DB migration on my external site that provides SSO? and allow those users to keep their existing discourse profile when they’ll log in Thanks for that good work --- _[View the full topic](https://meta.discourse.org/t/is-it-possible-to-change-users-ssos-external-id-after-a-db-migration/62099)._