Upgrading oracle from 11.2.0.3 to 11.2.0.4

Hi everyone!

I am trying to upgrade an Oracle from 11.2.0.3 to 11.2.0.4 on Linux. I installed oracle 11.2.0.4 in /oracle/SM1/11204,

and add environments:

setenv ORACLE_HOME_TGT  /oracle/SM1/11204

setenv ORACLE_HOME_SRC /oracle/SM1/11203

When I wrote in oratab SM1:/oracle/SM1/11203:Y: I am getting this error in DBUA:

But it's already opened in mount mode:

When I wrote in oratab SM1:/oracle/SM1/11204:Y: I am getting this error in DBUA:

What I am doing wrong ? Help me please !