EM 12c, 13c: Upgrade Throws Error 'Unable to upgrade. You are trying to upgrade an additional OMS' After Providing Adminserver Credentials
(Doc ID 2553199.1)
Last updated on OCTOBER 04, 2019
Applies to:Enterprise Manager Base Platform - Version 126.96.36.199.0 and later
Information in this document applies to any platform.
EM upgrade fails at 'Extend WebLogic Server Domain' Screen with the following message after providing Adminserver credentials:
Unable to upgrade. You are trying to upgrade an additional OMS, and not the first OMS that is configured with the Administration Server. Upgrade the first OMS before you upgrade any additional OMS instances.
Check the below screen shot
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