安装Oracle RAC 11gr2时，SSH连接测试失败，连接成功但在测试阶段失败，以下是一些日志，
INFO: Environment Variables:
INFO: ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1
INFO: PATH = /usr/bin:/usr/ccs/bin:/u01/app/oracle/product/11.2.0/db_1/bin:/usr/sbin:/root/software/jdk1.7.0_60/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/oracle/bin:/home/oracle/software/grid/install
INFO: CLASSPATH =
INFO: Username:oracle
--------------
---------------
-------------
INFO: /bin/rm /home/oracle/.ssh/id_rsa
INFO: Exit-status: 1
INFO: Error: /bin/rm: cannot remove `/home/oracle/.ssh/id_rsa': No such file or directory
---------------
-------------
--------------
上面不是完整的日志，但是第一个错误发生的地方，我该如何解决？你的帮助会极大地帮助我。