SQL & PL/SQL

Hello all

Need your help and advice on my problem that i facing now,
I did to recompile all the object in oracle using

@UTLRP.SQL in $ORACLE_HOME\rdbms\admin

The sql was running about 4 hours but still running, but actually i dont know is it hang or still running

My question is
- is this normal, since that already run for 4 hours
- how to check whether is still running or hang, I did check on the task manager, the oracle.exe keep moving
- Can i cancell it ? any problem later on if i cancel it ?
- Is there any log to check

Sorry so many question, need all of your advice

Thanks in advance

Cheers
Surya