Verifying DB links
I have hundred of private DB links in database running on 10.2.0.3, these DB links are from different schemas, is there anyway i can login using system or sys to verify if all these DB links are still valid?
I'm aware that i can do this by login each of the individual schema and select from its DBlinks, but how can i do it by login in either SYSTEM of SYS to verify all without needed to login each of the schemas?
Appreciate of any advise given.
best regards