Verifying PATH and Environment for the Oracle login name

Before proceeding to install Oracle files, make sure the /usr/ccs/bin directory is in the PATH environment variable for the oracle login name.

About this task

To verify the PATH and environment:

Log in as oracle. Set and export the DISPLAY environment variable.
If you are using the su command to become oracle, use a hyphen as the second argument so the oracle user login environment is loaded:
```
# su - oracle
```
Verify that the environment variable ORACLE_BASE has been set by entering the following command:
```
$ env | grep ORA
```
If the response does not include ORACLE_BASE=/opt/oracle, stop and make sure the .profile file was set for the oracle user, as described in Run the Oracle client configuration script.
To verify the path, enter the following command:
```
$ echo $PATH
```
The output must show that /usr/ccs/bin is part of the search path. For example:
```
/usr/bin:/opt/oracle/product/12.1.0/bin:/usr/ccs/bin
```
1. If this directory is not in the path, add it by entering the following commands:
```
$ PATH=$PATH:/usr/ccs/bin
$ export PATH
```