If you are not a My Oracle Support registered user, click Register here and follow the registration instructions.
On the main My Oracle Support page, click the Patches & Updates tab.
In the Patch Search group, select Product or Family (Advanced).
In the Product field, select Oracle Database.
In the Release field select one or more release numbers.
Any available patch updates are displayed in the Patch Search page.
Select the patch number and click ReadMe. The README page displays and contains information about the patch set and how to apply the patches to your installation.
Return to the Patch Search page, click Download, and save the file on your system.
Use the unzip utility provided with Oracle Database 12c to uncompress the Oracle patch updates that you downloaded from My Oracle Support. The unzip utility is located in the $ORACLE_HOME/bin directory.