I need to migrate ibm portal 5.1 to 6.1, but the problem is that I
need to change operating system of the server as well. I change os
from AIX to RedHat. In IBM site, it is told that migration is not
supported between differentsoperating systems, so do I need to form
portal from scratch or is there some way to do this migration
automatically

Best regards,

Mehmet Kuzu