Open System Services ODBC/MX Client Driver Manual for SQL/MX Release 3.2.1 (H06.26+, J06.15+)

OSS ODBC/MX Client Driver Features
The OSS ODBC/MX Client Driver 3.x supports the following features:
Row size limit is increased to align with maximum block size 32768 for MX tables.
A clustering key length up to 2048 bytes is allowed for range and hash partitioned MX tables.
The precision of the NUMERIC data type is extended up to 128 digits for signed and unsigned
values.
Limitations of OSS ODBC/MX Client Driver
The system running an R 3.x version of NonStop OSS ODBC/MX Driver does not connect to a
NonStop system running an R 2.x version of ODBC/MX server objects.
When you try to connect an R 3.x version of NonStop OSS ODBC/MX Driver to an R 2.x version
of ODBC/MX server objects, the behavior is unpredictable.
OSS ODBC/MX Client Driver Features 23