Database Configuration failed. Look into /u01/app/oracle/product/11.2.0/xe/config/log for details..
Pl post the contents of the log file indicated, along with the exact OS version/edition you are installing on.
Try digging into ...config/log for details ... like the config script suggests ...
Can't fix a problem until its cause is identified.
Also the host OS particulars (which release? version?) are important bits of information as well. The later ubuntu and some other newer distros need a workaround or two.