Four ways to increase tablespace size

--Meathod1: Add data files to the tablespace
ALTER TABLESPACE app_data ADD DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF' SIZE 50M;
 
--Meathod2: Add data files and allow data files to grow automatically
ALTER TABLESPACE app_data ADD DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP04.DBF' SIZE 50M AUTOEXTEND ON NEXT 5M MAXSIZE 100M;
 
--Meathod3: Allow existing data files to grow automatically
ALTER DATABASE DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF' AUTOEXTEND ON NEXT 5M MAXSIZE 100M;
 
--Meathod4: Manually resize existing data files
ALTER DATABASE DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP02.DBF' RESIZE 100M;