Based on customer feedback, the Oracle TimesTen 18.1 licensing has been simplified:
- TimesTen In-Memory Database can now also be used for caching
- TimesTen Application Tier Database Cache can now also use TimesTen Scaleout
The complete licensing document for TimesTen 18.1 is here.
The relevant portion of the new licensing text is:

Oracle TimesTen In-Memory Database Licensing

TimesTen In-Memory Database 18.1 supports:
- Single Instance TimesTen Classic
- Replicated TimesTen Classic
- TimesTen Scaleout
- Single Instance TimesTen Classic as a cache for the Oracle Database
- Replicated TimesTen Classic as a cache for the Oracle Database
- TimesTen Scaleout as a cache for the Oracle Database
Oracle TimesTen Application Tier Database Cache Licensing

TimesTen Application Tier Database Cache 18.1 supports:
- Single Instance TimesTen Classic as a cache for the Oracle Database [Enterprise Edition]
- Replicated TimesTen Classic as a cache for the Oracle Database [Enterprise Edition]
- TimesTen Scaleout as a cache for the Oracle Database [Enterprise Edition]
- At least one table on an Enterprise Edition Oracle Database needs to be cached for this product to be licensed
Disclaimer: These are my personal thoughts and do not represent Oracle’s official viewpoint in any way, shape, or form.
