Observe the following points regarding Unicode support for the Image,
Audio, and Video Extenders:
The only parameters that can be a Unicode string are the comment fields in
the following UDFs:
mmdbsys.db2image( ) import an image
mmdbsys.db2audio( ) import an audio
mmdbsys.db2video( ) import a video
mmdbsys.replace( ) replace an image, an audio, or a video
mmdbsys.comment( ) comment update
If you are planning to access an Unicode database, you must use a DB2
extenders instance set up to support Unicode. An Unicode instance will
only handle Unicode database.
In order for an extender instance to support Unicode, you set the
environment variable DB2CODEPAGE to 1208 before invoking DMBSTART.