mysql有关big5的问题?

030825 20:44:29  mysqld started
/user/local/mysql/libexec/mysqld: File '/user/local/mysql/share/mysql/charsets/big5.xml' not found (Errcode: 2)
/user/local/mysql/libexec/mysqld: Character set 'big5' is not a compiled character set and is not specified in the '/user/local/mysql/share/mysql/charsets/Index.xml' file
030825 20:44:29  Aborting
怎么回事???