Oracle upgrade 11.2.0.4.0 - null error

Hi,

I'm upgrading oracle patch level from 11.2.0.3.0 to 11.2.0.4.0, I have installed software using Runinstaller, but while executing .dbua.sap.sh script im getting a null error.

Please suggest me as soon as possible.

Regards,

R.Ramkumar