A new feature for Oracle Data Mining in Oracle 12.2 is the new Model Details views.
In Oracle 11.2.0.3 and up to Oracle 12.1 you needed to use a range of PL/SQL functions (in DBMS_DATA_MINING package...
Recommendations
Create a minimum of three groups with two log files each. A minimum of two groups of log files each are required for each Oracle instance (even in a parallel instance environment.)
I...