Because we run multiple instances of the same application on the dev-servers, I'm trying to add the sqlnet.client_registration-parameter to the sqlnet.ora-files used by each instance. This, I hope, would help us distinguish clients by the instance-name instead of (or in addition to) hostname:
sqlnet.client_registration=MeowMeow
However, I do not see the configured strings anywhere in the V$SESSION -- is there some other place to look for the "MeowMeow" from the above example?