Oracle XE 18c database size limitation

According to official Oracle documentation available at https://www.oracle.com/database/technologies/appdev/xe/faq.html it has limitations: > What are the resource limits for Oracle Database XE Oracle Database XE > supports up to: > > 3 Pluggable Databases > > 2 CPUs for foreground processes > > 2GB of RAM (SGA and PGA combined) > > 12GB of user data on disk (irrespective of compression factor) When running SQL select TABLESPACE_NAME "Tablspace", FILE_NAME "Filename", BYTES/1024/1024 "Size MB" from SYS.DBA_DATA_FILES; I have the result: Tablspace Filename Size MB ------------------------------ ------------------------------------------------------- ---------- USERS C:\ORACLEXE18C\PRODUCT\18.0.0\ORADATA\XE\USERS01.DBF 11,25 UNDOTBS1 C:\ORACLEXE18C\PRODUCT\18.0.0\ORADATA\XE\UNDOTBS01.DBF 4230 SYSTEM C:\ORACLEXE18C\PRODUCT\18.0.0\ORADATA\XE\SYSTEM01.DBF 8630 SYSAUX C:\ORACLEXE18C\PRODUCT\18.0.0\ORADATA\XE\SYSAUX01.DBF 900 ## Question Which files does Oracle consider to validate the maximum size 12GB? Because if you make the sum of the 4 TableSpace I have already passed 12 GB.