[oracle@sourcetest ~]$ sqlplus '/ as sysdba'
SQL*Plus: Release 12.1.0.1.0 Production on Thu Jul 25 19:57:38 2013
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
SQL> select name,dbid,con_dbid,cdb,con_id from v$database;
NAME DBID CON_DBID CDB CON_ID
--------- ---------- ---------- --- ----------
MYCDB 2166941381 2166941381 YES 0
The value of CDB yes tells us that its a container database, and its container ID is 0.
On this page