Upgrade database 11.1.0.7 to 11.2.0.4

Dear Experts,

We are in process of upgrading database 11.1.0.7 to 11.2.0.4.

We have uncommented the environment file in .bash_profile and relogin to make sure no environment is set before installing 11.2.0.4

We are not using central inventory on this existing 11.1.0.7 machine.

cat /etc/oraInst.loc-->no such file or directory

We have set below variables before we install 11.2.0.4

[oracrp@SSSTINDCPOPX02 u02]$ cat a.env

export ORACLE_BASE=/u02/TEST/db/tech_st

export ORACLE_SID=SSSEBSTR

export ORACLE_HOME=/u02/TEST/db/tech_st/11.2.0------------------>

export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/perl/bin:$PATH

export LD_LIBRARY_PATH=$ORACLE_HOME/lib