The Adaptive Server Enterprise ODBC Driver, ADO.NET Data Provider, and OLE DB Provider communicate with Adaptive Server using a negotiated character set, which you can configure in the driver’s user interface as User Specified, Server Default, or Client Default. Server Default is the default setting; however, ADO.NET, OLE DB, and ODBC do not support all character sets that Adaptive Server supports, and using an unsupported character set raises this error:
[Sybase][driver] Could not load code page for requested charset
To avoid this error, perform one of the following:
In your driver’s user interface, go to the Advanced tab and select Client Default as your character set. If you choose Server Default or User Specified, ensure that the server's default character set or your specified character set is supported.
In the connection string, ensure that the charset property specifies a supported character set.
Microsoft Windows x86 32-bit and Microsoft Windows x64
64-bit do not support roman8, roman9, and ascii_8.