SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = PLSExtProc) (ORACLE_HOME =/oracleapp/oracle/product/11.2.0/dbhome_2) (PROGRAM = extproc) ) (SID_DESC = (SID_NAME =orcl2) (ORACLE_HOME =/oracleapp/oracle/product/11.2.0/dbhome_2) ) (SID_DESC = (SID_NAME =orcl) (ORACLE_HOME =/oracleapp/oracle/product/11.2.0/dbhome_2) ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =127.0.0.1)(PORT = 1521)) (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0)) ) )