sergiogonzalez/liferay-portal — pull request #186 by matethurzo (2012-03-22 08:48:15+00:00)
Title: LPS-22247

Hi Sergio,

This is an upgrade problem, the similar fix has been already applied to the UpgradeProcess_6_1_0, now this is like a backport to the UpgradeProcess_6_0_12_to_6_1_0.

You can reproduce the problem if you start a 6012 instance on oracle or postgresql, create a message board thread, mark it as a question, and then answer to it, mark the second post as an answer, then the exception will occur during the upgrade.

Thanks,

Máté