selecting table_name from dba_tables

[dorothy]

Hello,
I have a table called CHECKING so I logged on with dba role and issued this statement:
select table_name, owner from dba_tables where table_name = 'CHECKING'
I received no row selected.
Am I doing something wrong?

I also issued select * from dba_tables where table_name = 'CHECKING'
Again, I received:
no row selected.