查看DB2CODEPAGE

db2 => SELECT CODEPAGE FROM SYSCAT.DATATYPES WHERE TYPENAME = 'VARCHAR'

CODEPAGE
--------
     950


see also:
db2set DB2CODEPAGE=1208
GET DATABASE CONFIGURATION

ref:
http://publib.boulder.ibm.com/infocenter/idshelp/v10/index.jsp?topic=/com.ibm.jdbc_pg.doc/jdbc187.htm

http://publib.boulder.ibm.com/infocenter/db2luw/v8//index.jsp?topic=/com.ibm.db2.udb.doc/admin/r0004565.htm

http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp?topic=%2Fcom.ibm.db2.luw.admin.nls.doc%2Fdoc%2Fr0004565.html

Choosing the code page, territory, and collation for your database
http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp?topic=%2Fcom.ibm.db2.luw.admin.nls.doc%2Fdoc%2Ft0004617.html