You still haven't figured out you are just wasting your time and that of everyone here that has tried to help you.

Had you supplied with all the information...

intriguing - are all servers on same SP/CU level? 
And same for OS

bahhh... try and work with irish capitalization... 
an tSín (China)
Máire Mhac an tSaoi "Mary McEntee"

where the capital is...

Just to be  sure sure... if you execute those commands in all of the cluster nodes does any of them give a similar result to that of the dmv?

My take on this if I was the DBA.

From your side I would only be interested in knowing the following
--Expected growth of the databases
--Batch job activity...

without some type of coding it will be complex and cumbersome - and code is easy, straightforward and plenty of samples on the net. One such example https://stackoverflow.com/questions/6589136/how-to-ping-from-within-an-ssis-package - you...

code needs a quotename on the column list build
  (select ', ' + quotename(COLUMN_NAME) ---
     from ##Resultset

you can if you use a custom script.
Not advisable and on my opinion it should not be done, and it is no longer replication.
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp-addarticle-transact-sql?view=sql-server-2017
https://docs.microsoft.com/en-us/sql/relational-databases/replication/transactional/transactional-articles-specify-how-changes-are-propagated?view=sql-server-2017

one way.

get a machine with 16 GB or more -- less and it will crawl.
install a free esx hypervisor - https://www.vmware.com/products/vsphere-hypervisor.html
setup 3 VM's 
  -...

Control panel -> administrative tools -> Data sources (ODBC) - Drivers - will most likely also contain an entry for each Oracle driver installed on each home
registry - KHLM\Software\Oracle...

there may be a lot more to it.

first how are you extracting from DB2
- Direct connection from SSIS (OLEDB or similar)
  -- in this case...