Registered DBServers - is there a list with the usernames used in the connection

Hi guys,

i have to change the connection details of some of our servers.

so 2 things would be useful to facilitate my work:

- have a list of the registered DBSERVERS with their respective usernames/logins used

- have a way of BULK updating the details of the DBSERVERS, whereby the same details are used on multiple connections

while these are not available ...

any suggestions on how i could do this by running an UPDATE statement on the repository?

thanks,