Installing Oracle 11g in Ubuntu 8.04

What im trying to do in here right after i've restart the server i did try to run the dbca command, I get into problems where got something to do with export DISPLAY=ip_address:0.0 until i came out into 1 of the comment whereby saying to login using oracle id.I also did do the command export display and another error come out, No protocol specified. So what i did to unlock the oracle acount in ubuntu and login in using username oracle.
And seems to be the problem solved after login ubuntu using oracle account i manage to run dbca and another problem occur, where the popup start to go blank after i manage to create new database another popup of confirmation database creation and i just Enter 2 to 3 times then another popup came up and just blank but it seems like the server a lil bit heavy.I assume it does create the database.
I'll come back on Monday or Tuesday to see the result either the database created or not and it took me a week to manage until this and i will come out with the picture to show what im talking about.
And seems to be the problem solved after login ubuntu using oracle account i manage to run dbca and another problem occur, where the popup start to go blank after i manage to create new database another popup of confirmation database creation and i just Enter 2 to 3 times then another popup came up and just blank but it seems like the server a lil bit heavy.I assume it does create the database.
I'll come back on Monday or Tuesday to see the result either the database created or not and it took me a week to manage until this and i will come out with the picture to show what im talking about.