Error trying to upgrade Oracle 11g to 12c

Question

I downloaded Oracle 12.c and selected the option to upgrade my current database. At 86 % I got the error on the image : Database Upgrade Checks -> Upgrade Storage Checks. What can I do?

Answer 1

What are the settings for the SYSTEM tablespace and datafiles? Run this query to get some details:

select dbms_metadata.get_ddl('TABLESPACE', 'SYSTEM') from dual;

My guess is that the SYSTEM tablespace is set to a small maxsize. This command may fix the problem:

alter database datafile 'E:\ORACLE\APP\ORACLE\ORADATA\XE\SYSTEM.DBF' 
  autoextend on maxsize unlimited;

The path contains "XE", are you using Express Edition? I wouldn't be surprised if it was impossible to upgrade Express Edition to 12c. Express Edition contains some artificial limitations and is neither patched nor (seriously) supported.