In Mathematica 11.2.0.0 (under macOS HighSierra 10.13.3), I'm trying to use DatabaseLink with the supplied example databases. Here's what I've done:
 
<< DatabaseLink`DatabaseExamples`
DatabaseExamplesBuild[]
 
 JDBC::error: invalid authorization specification - not found: SA $Failed[1, DatabaseLinkDatabaseExamplesPackage`RestoreException["publisher"]]
 
What's wrong and how should it be fixed?