no...not possible

is the Oracle Client 64bit or 32bit? can you ping the oracle host successfully from the server?. Have you specified tnsnames.ora path in system environment variables?.

SELECT * FROM fn_trace_gettable('tracefilelocation.trc', default) Trace

no tool to convert to excel...we can convert .trc file into SQL Table..and may be you can copy the table to excel..

We mostly use SA as owner and few of our instances have service account as an owner..

Have you tried changing the provider to "Microsoft OLE DB Provider for SQL Server"

I was able to uninstall SSRS from command prompt.

"setup.exe /ACTION=uninstall /FEATURES=RS /INSTANCENAME=MSSQLSERVER"

yes, you can.

Microsoft recommends that you put MS DTC in its own group with its own physical disk resource, if it is possible.

I have recently installed oracle client 11.2 on our windows cluster.Install oracle client on C: Drive and repeat the same in other node too.You may have to add a path...

Have you checked the event viewer - application error logs

5GB is more than enough.

Yes, but only if it is inplace upgrade.

Check this

http://www-01.ibm.com/support/docview.wss?uid=swg21275646

Take Offiline/Bring Online....this will restart the services with out any failover.