You need to migrate the catalog table if you are planning
to use some of the NOSQL API features available for JSON in DB2® V10.4 FP4 or later.
Complete the migration steps if you plan on using any of the following
features:
- Capped collections
- Creating an index on field names larger than 30 characters.
Any application that is shipped with DB2 V10.5 FP3 or earlier continues
to function with DB2 V10.5 FP4
and no migration is needed.