· Go to Listening locations tab from drop down menu. · Press Add Address button and select protocol as IPC . · Press Add Address again to enter port number. · Select TCP/IP Protocol and provide PORT number. · Save and Exit from netmgr . · You can configure several ports in this way with default LISTERNER . Your "listener.ora" file should look like the following entries now: SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = TESTDB) (ORACLE_HOME = /ultimus/oracle/product/10.2.0/db_1) ) (SID_DESC = (GLOBAL_DBNAME = TESTDB) ...