I have upgraded the Oracle database from 11.2.0.4 (standard) to 12.1.0.2.0 (enterprise) on a test server/sand box using DBUA. After the upgrade when I ran a query to see whether the database has been created as CDB or not (select cdb from v$database), I got 'NO' as response from the database. The version of the database shows correct(12.1.0.2.0), but looks like the container database option is not available. Please let me know what am I doing wrong.
Fyi...I have downloaded Oracle 12c(12.1.0.2.0) on redhat Linux 6.0 to see various options in 12c before we go for Licensing.
thank you.