About Unicode Support
Previous releases of Siebel Business Applications supported ASCII- and EBCDIC-based coded character set IDs (CCSIDs) on DB2 for z/OS. Since Siebel CRM 8.0, Unicode is also supported on DB2 for z/OS version 8 and later releases. For a list of supported languages and code pages, see the Certifications tab on My Oracle Support.
You can migrate your Siebel database from an EBCDIC or ASCII code page to a Unicode encoding system but this process is not part of the standard Siebel CRM upgrade procedure. A separate migration procedure for migrating to Unicode is performed on the DB2 host after you have upgraded to the current release of Siebel CRM. For information on migrating to Unicode, see Implementing Siebel Business Applications on DB2 for z/OS.