Can't find orazht.msg file

[shuan.tay\(PCI鄭祺勛\)]

Dear all,   Where can i download orazht.msg? 'Cos when i issue 'oerr ora 1562', it showed "Cannot find /home/oracle/product/8.1.6/rdbms/mesg/orazht.msg file."   I'm using Oracle8.1.6 on Redhat7.2   Thanks in advance.