Developing Portable Applications : 3. Application Considerations : Unsupported Features : Gateway-specific Unsupported Features
 
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Gateway-specific Unsupported Features
The gateways do not support the additional features shown in the following table:
Gateway
Unsupported Features
Microsoft SQL Server
Microsoft SQL user-defined data types
fetch with the options: previous, first, last, current, relative n, absolute m, and related declare...scroll cursor...
declare ... cursor with hold ...
Oracle
Oracle user-defined data types.
DB2 UDB
DB2 UDB user-defined data types.
At this time, the DB2 UDB gateway does not support NCHAR, NVARCHAR and LONG NVARCHAR data types.