Oracle Data Mining, a component of Oracle Advanced Analytics, is documented on the Data Warehousing and Business Intelligence page of the Oracle Database online documentation library:
http://www.oracle.com/pls/topic/lookup?ctx=db121&id=dwbitab
The following manuals document Oracle Data Mining:
Oracle Data Mining User's Guide (this guide)
Oracle Data Mining API Guide (a virtual book)
Note:
The virtual book combines key passages from the two Data Mining manuals with related reference documentation in Oracle Database PL/SQL Packages and Types Reference, Oracle Database SQL Language Reference, and Oracle Database Reference.
Oracle Database PL/SQL Packages and Types Reference (PL/SQL packages)
DBMS_DATA_MINING
DBMS_DATA_MINING_TRANSFORM
DBMS_PREDICTIVE_ANALYTICS
Oracle Database Reference (data dictionary views for ALL_, USER_, and DBA_)
ALL_MINING_MODELS
ALL_MINING_MODEL_ATTRIBUTES
ALL_MINING_MODEL_SETTINGS
Oracle Database SQL Language Reference (Data Mining functions)
CLUSTER_DETAILS, CLUSTER_DISTANCE, CLUSTER_ID, CLUSTER_PROBABILITY, CLUSTER_SET
FEATURE_DETAILS, FEATURE_ID, FEATURE_SET, FEATURE_VALUE
PREDICTION, PREDICTION_BOUNDS, PREDICTION_COST, PREDICTION_DETAILS, PREDICTION_PROBABILITY, PREDICTION_SET