Oracle 10g XE customization

In SQL*Plus, sqlplus / as sysdba

alter system set processes=300 scope=spfile;
alter system set open_cursors= 300;
alter system set job_queue_processes=20;
alter system set SHARED_SERVERS = 5;
alter system set memory_max_target=1G scope=spfile;
alter system set memory_target=1G scope=spfile;
alter system set sga_max_size=600M scope=spfile;

alter system set DB_CREATE_FILE_DEST = '/u01/app/oracle/oradata';
EXEC DBMS_XDB.SETHTTPPORT(0);
EXEC DBMS_XDB.SETLISTENERLOCALACCESS(TRUE);

Check the parameters

select * from v$resource_limit;