It is good to remember all the Oracle component ports – But, if you do forgot them, you can always refer the ports number under below directory,
$ORACLE_HOME\install
Open the portlist.ini file and you will see the Oracle component ports.
iSQL*Plus HTTP port number =5561 iSQL*Plus HTTP port number =5560 Enterprise Manager Console HTTP Port (ELY) = 1158 Enterprise Manager Agent Port (ELY) = 3938
