OMF DB creation

Hello,

I have been trying to create an OMF Database. I have set all the parameters required in the init.ora file. But when I issue the CREATE DATABASE command, the process is stopped and my session is disconnected. So I tried and see whether the files were at least created and... they were. They are files with weird name and .dbf, .ctl and .log extensions. When attempting to mount the datafiles and get an ORA 205 error, stating that the control file is not identified. I tried differents solutions that were proposed to me over the net but none worked. Can any one help me? I would like to use it as a test database and see the behoviour of an OMF database.

Thanks.