In order to apply patch on Oracle Application Server installation on single machine
Operating System: Red Hat Linux AS 4
Application Server Version: 10.1.2.0.2
We have Oracle Metadata repository and Oracle AS on the same machine.
First apply the database patch to the metadata repository and upgrade it to 10.1.5.
Then download the AS patch: Patch Set 3 (10.1.2.3.0)
you have to apply the Application Server patch in following order:
1.Apply the Software Update to the AS installation.
2.Apply the Software Update to Infrastructure installation.
3.Apply the Metadata Repository Update.