ORACLE DBA : Unix/Linux scp or ssh issue:-Offending key in /home/oracle/.ssh/known

ISSUE:-

Following error will be displayed when the remote host key changes

[oracle@amer 11.2.0]$ scp dbhome_1.tar root@192.168.1.112:/u01/app/oracle/product/11.2.0/

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

Someone could be eavesdropping on you right now (man-in-the-middle attack)!

It is also possible that the RSA host key has just been changed.

The fingerprint for the RSA key sent by the remote host is

19:24:80:58:3f:4a:b3:bf:c9:26:36:8a:0e:44:f1:41.

Please contact your system administrator.

Add correct host key in /home/oracle/.ssh/known_hosts to get rid of this message.

Offending key in /home/oracle/.ssh/known_hosts:1

RSA host key for 192.168.1.112 has changed and you have requested strict checking.

Host key verification failed.

lost connection

SOLUTION:-

You have to remove the key to proceed further

[oracle@amer 11.2.0]$ sed -i '1d' ~/.ssh/known_hosts

OUTPUT:-

[oracle@amer 11.2.0]$ scp dbhome_1.tar root@192.168.1.112:/u01/app/oracle/product/11.2.0/

The authenticity of host '192.168.1.112 (192.168.1.112)' can't be established.

RSA key fingerprint is 19:24:80:58:3f:4a:b3:bf:c9:26:36:8a:0e:44:f1:41.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.1.112' (RSA) to the list of known hosts.

root@192.168.1.112's password:

...........................................................................................

ORACLE DBA