How to get port number list of EM and isqlplus

How to get port number list of EM and isqlplus

You can get your portlist information of enterprise manger or isqlplus or others web services in the location of $ORACLE_HOME/install/portlist.ini.

On my system the output is,
bash-3.00$ cat /oracle/app/oracle/product/10.2.0/db_1/install/portlist.ini
iSQL*Plus HTTP port number =5560
Enterprise Manager Console HTTP Port (DBASE) = 1158
Enterprise Manager Agent Port (DBASE) = 3938
Enterprise Manager Console HTTP Port (arjudba) = 5500
Enterprise Manager Agent Port (arjudba) = 1830
Enterprise Manager Console HTTP Port (arju) = 5501
Enterprise Manager Agent Port (arju) = 1831

But note that the ports that are listed in portlist.ini file were assigned during the installation. This file is not updated if port numbers are changed after the installation.