There are different techniques for installing your Oracle deployment, depending on how you want to execute the installation:
Section 5.2, “Deploying Oracle to MySQL Replication” — Installs an Oracle to MySQL deployment. This can be accomplished as a single installation requiring the inclusion of Oracle system passwords in the tpm command, or a multi-step procedure which does not.
Section 18.104.22.168, “Installing a Standalone Oracle Extractor for Heterogeneous Deployments” — Installs an Oracle extractor only, which can be used in heterogeneous, data warehouse, and more complex deployments. This step requires including Oracle system passwords in the tpm installation.