JBoss ON install fails with "No suitable driver found for jdbc:oracle"

Issue

• Installing JBoss ON and receive below error:

11:47:53,245 WARN  [org.rhq.enterprise.server.installer.ServerInstallUtil] Installer failed to test connection: java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:server.domain.com:1526:orcl
        at java.sql.DriverManager.getConnection(DriverManager.java:596) [rt.jar:1.7.0_51]
        at java.sql.DriverManager.getConnection(DriverManager.java:215) [rt.jar:1.7.0_51]
        at org.rhq.core.db.DbUtil.getConnection(DbUtil.java:60) [rhq-core-dbutils-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.ServerInstallUtil.getDatabaseConnection(ServerInstallUtil.java:994) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.ServerInstallUtil.ensureDatabaseIsSupported(ServerInstallUtil.java:954) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.ServerInstallUtil.testConnection(ServerInstallUtil.java:931) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.InstallerServiceImpl.testConnection(InstallerServiceImpl.java:839) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.InstallerServiceImpl.test(InstallerServiceImpl.java:255) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.Installer.doInstall(Installer.java:96) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at org.rhq.enterprise.server.installer.Installer.main(Installer.java:59) [rhq-installer-util-4.12.0.JON330GA.jar:4.12.0.JON330GA]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_51]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_51]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_51]
        at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_51]
        at org.jboss.modules.Module.run(Module.java:312) [jboss-modules.jar:1.3.3.Final-redhat-1]
        at org.jboss.modules.Main.main(Main.java:460) [jboss-modules.jar:1.3.3.Final-redhat-1]