Backup Server passes messages to the Cluster Edition in the client’s language and in the Cluster Edition character set. The Cluster Edition then converts the messages and issues them in the client’s language and character set. Keep the following requirements in mind when selecting a character set:
In a heterogeneous environment, the Cluster Edition and Backup Server may need to communicate with clients running on different platforms and using different character sets. To maintain data integrity, the server converts the code between the character sets.
Unicode conversions exists for all native character sets. When converting between two native character sets, Unicode conversion uses Unicode as an intermediate character set. For example, to convert between the server default character set (CP 437), and the client character set (CP 860), CP 437 is first converted to Unicode; Unicode is then converted to CP 860. By default, Unicode conversion is used for character set conversion.
Adaptive Server direct conversions support conversions between two native character sets of the same language group. For example, Adaptive Server supports conversion between CP 437 and CP 850, because both belong to the group 1 language group. To use the direct conversion, you must install the character set definition files on the server for all the character sets being used by your clients. To enable direct conversion, you must run sp_configure 'enable unicode conversion', 0 to disable Unicode conversion.
If either the Cluster Edition or Backup Server does not support a client’s language or character set, that server issues a warning message. Errors also occur when the Backup Server character set is not compatible with the Cluster Edition character set.
For more information about supported conversions, see the System Administration Guide.
