How to query custom metrics, for content exploration workbooks

Question

FDI has a content explorer for out of the box metrics.

Is there an internal table that stores the custom created key metrics?

Our goal is to create a version of the content explorer that incorporates any custom metric

https://community.oracle.com/products/oracleanalytics/discussion/23229/does-the-content-explorer-dashboard-in-fdi-include-custom-content

Sumanth V -Oracle · Accepted Answer

@Victor H - These details are typically stored in the RCU tables, which are not exposed and are inaccessible in OAC.