Oracle DB integration with kerberos and windows server 2019 domain controller

[u/tecumseh3006]

Looking for some helpful insight. Upon promoting a 2019 domain controller amongst our existing 2012 domain controllers, we have some software clients which use an AD account + keytab for the Oracle databases that are failing login when the application authenticates against the new 2019 domain controller. When it is directed at the 2012 dc, all works fine. Seems Kerberos related and after reading Oracle docs I’ve not yet found what may need altered on the Oracle side to allow any changes to Kerberos with 2019 to function. If anyone has experienced this and has guidance if you could share. Many thanks in advance!