The WebLogic Server 12c has very nice support for Maven now. The doc for this is kinda hidden though, so here is a direct link http://docs.oracle.com/middleware/1212/core/MAVEN
To summarize the doc, Oracle did not provide a public Maven repository manager hosting for their server artifacts. However they do now provide a tool for you to create and populate your own. You can setup either your local repository (if you are working mostly on your own in a single computer), or you may deploy them into your own internal Maven repository manager such as Archiva or Nexus.
The ODI 12c SDK provides a mechanism to accelerate data integration development using patterns and the APIs in the SDK. With OWB many customers automated mundane tasks – tasks that were repeated and consistent. I’ve uploaded a bunch of examples covering many characteristics of the 12c mapping SDK, the examples are primarily slanted towards the logical side right now. You can find examples of the components and images for each on the java.net site (download ODI_12c_Mappings_SDK Examples here unzip and inspect the groovy). This is an open community area where you too can contribute.