i am new to dba and i am working on oracle 8i but our company want to port to oracle 9i and i want to migrate my database to oracle 9i.

i have got a clean install of oracle 9i on redhat 7.1 with all the required parameters.i also made a default database and it up and running.

i now want to migrate my oracle 8i to 9i without using the utilities given my oracle o r say manually.

please let me the procedure.