only fail testcase id: datamodel_named_constraints. Show 122 failed constraints with invalid names.
Right, this one's known and until someone steps forward to fix them, ignored.
It's not that big a deal, the contraint naming convention makes it a lot easier to figure out which table and column are the source of the error, but even non-conforming names are a lot better than an unnamed constraint (and the resulting non-useful tag used by Oracle when it reports the error).