To perform a readiness check on your pre-upgrade environment, you will launch the Upgrade Assistant in -readiness mode as shown below:
Change directory to ORACLE_HOME/oracle_common/upgrade/bin on Unix operating systems or ORACLE_HOME\oracle_common\upgrade\bin on Windows operating systems.
Enter the following command to start the Upgrade Assistant.
On UNIX operating systems:
./ua -readiness
On Windows operating systems:
ua.bat -readiness
Provide the required information in each of the Upgrade Assistant screens. The screens you see will vary depending on the upgrade options you select. The sections below describe the upgrade options and the information you will need to provide.