Ubuntu10.04 oracle11g installation, reported OUI-10182

Ubuntu10.04 oracle11g installation, report OUI-10182 -- Linux general technology-Linux technology and application information, the following is read details. Ubuntu10.04 oracle11g is ready for use;
The runInstaller has been started under the oracle user. When you finish the installation after the final summary, the following message is displayed:
OUI-10182-Th e valid tive user ID does not match the owner of the file, or the process is not the super-user, the system indicates that super-user privilege is required
How can this problem be solved?

User: oracle, group: oinstall, dba
# Useradd-g oinstall-G dba-d/home/oracle-s/bin/bash oracle
...
# Mkdir/home/oracle
# Chown-R oracle: dba/home/oracle
...
# Mkdir-p/u01/app/oracle
# Chown-R oracle: dba/u01

The environment variable is:
# Oracle environment
Export ORACLE_BASE =/u01/app/oracle
Export ORACLE_HOME = $ ORACLE_BASE/product/11.2.0/dbhome_1
Export ORACLE_SID = orcl
Export LD_LIBRARY_PATH = $ ORACLE_HOME/lib
Export PATH = $ ORACLE_HOME/bin: $ PATH
Export EDITOR =/usr/bin/vi

For detailed configuration, see: http://www.pythian.com/news/1329... u-10-04-lucid-lynx/

The u01/app/oracle/product/11.2.0/dbhome_1 directory belongs to the dba group and the owner is oracle;
The u01/app/oraInventory directory belongs to the root group and the owner is root;

I suspect that these directories are caused by incorrect owner and group, but I do not know how to set them.