Tried and tested relational databases such as Oracle are trusted by enterprises for a reason. When we talk about making the shift to a graph database, we aren’t discounting the benefits that RDBMS provides for organisations in storing their highly structured and organised data. Sometimes, the reluctance lies in having to rip out a system that has money and time invested into it.
But who says that to leverage the capabilities of graphs, you would have to replace your RDBMS database completely? The beauty of Neo4j is that it can co-exist with Oracle RDBMS, giving you the best of both worlds.