Oracle database migration from rel_6_6 or earlier: Error POSTing resource with text fields over 4,000 characters

[lukedegruchy]

Describe the bug
After migrating oracle installs from 6.6, POSTING resources with text fields of more than 4,000 characters will fail.

To Reproduce
Steps to reproduce the behavior:

1. On a pre-6.6 install, create a Patient and some Observations linked to that Patient with valueStrings of over 4,000 characters.
2. Migrate to the latest pre-release for 7.0.
3. Try to POST an identical Observation as above
4. See error: ORA-01461: can bind a LONG value only for insert into a LONG column

Expected behavior
The update should occur and the data should be present in HFJ_RES_VER under one of the RES_TEXT columns

Environment (please complete the following information):

• HAPI FHIR Version: Master and 7.0