I tried to set up our Nexus instance to proxy maven.oracle.com according to the instructions in How to configure a proxy repository to maven.oracle.com – Sonatype Support
I notice, however, that all of the Oracle dependencies in that proxy are listed of type pom.sha254:
com.oracle.jdbc
ojdbc7
12.1.0.2_patched
pom.sha256
which are not resolved by my application when I add a dependency like it is written above nor when it is written as follows:
com.oracle.jdbc
ojdbc7
12.1.0.2_patched