why can't rlogin with oracle user

[Martin_171]

config RAC, edit the .rhosts file
Node1 root
Node2 root
Node1 oracle
Node2 oracle
on the both node,when I am root can rlogin right,but When su - oracle ,cannot rlogin with oracle user,why?
the oracle for RAC install should use rcp command.

[RAC_1]

As per your .rhosts file oracle from Node will be allowed rlogin.

From the Node1 system, you will have to do remsh host -l oracle

Anil

[Muthukumar_5]

We can not use .rhosts file for su command usage. By default,it will ask passwd except from root user.

If we want to rlogin from root to oracle on the same user,edit the .rhosts file of oracle home directory as,
--- edit /home/oracle/.rhosts ----
Node1 root
Node2 root
Node2 oracle

To rlogin from oracle to root user,

--- edit /.rhosts ------
Node1 oracle
Node2 root
Node2 oracle

Keep these changes on Node2's /.rhosts and /home/oracle/.rhosts file