I have installed oracle database 10g r2 in windows 7 system. After installation when i open browser by using 5560 port. it is working fine .
But when i open oracle by using 1158/em address and sys user it shows java .lang Exception : exception in sending request : : null.
if i click on administration link ,then it shows IO exception : unknown host specified .
I can't resolve the problem.
please help me.............