How to Set listener.ora and tnsnames.ora for Oracle Instances

I set listener.ora and tnsnames.ora, but I do not know if it is well set up.
When I call the lsnrctl status command, I get instances rcadb and proddb unknown.

I'm a beginner in Oracle, I installed the Oracle 12c pre-built.

Now that I've made two databases, I have this problem, I can not find a mistake.

The database orcl12c I got with the installation,
had host = 0.0.0.0 which I changed

Listener.ora:

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl12c)
      (SID_NAME = orcl12c)
      (ORACLE_HOME = /u01/app/oracle/product/12.2/db_1)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = prodDB)
      (SID_NAME = prodDB)
      (ORACLE_HOME = /u01/app/oracle/product/12.2/db_1)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = rcatDB)
      (SID_NAME = rcatDB)
      (ORACLE_HOME = /u01/app/oracle/product/12.2/db_1)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.2)(PORT = 1524))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.3)(PORT = 1525))
    )
  )

And I set tnsnames.ora like this:

ORCL12C =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl12c)
    )
  )

prodDB =
 (DESCRIPTION =
    (ADDRESS = (PROTOCOL=TCP)(HOST = 127.0.0.2)(PORT = 1524))
    (CONNECT_DATA =
       (SERVICE_NAME = prodDB)
    )
 )

rcatDB =
 (DESCRIPTION =
    (ADDRESS = (PROTOCOL=TCP)(HOST = 127.0.0.3)(PORT = 1525))
    (CONNECT_DATA =
       (SERVICE_NAME = rcatDB)
    )
 )


LISTENER_ORCL12C =
  (ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))


ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

lsnrctl status

Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.2)(PORT=1524)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.3)(PORT=1525)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=8081))(Presentation=HTTP)(Session=RAW))
Services Summary...
Service "51c99766d7e2568de0530100007f4fae" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "orcl12c" has 2 instance(s).
  Instance "orcl12c", status UNKNOWN, has 1 handler(s) for this service...
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "orcl12cXDB" has 1 instance(s).
  Instance "orcl12c", status READY, has 1 handler(s) for this service...
Service "prodDB" has 1 instance(s).
  Instance "prodDB", status UNKNOWN, has 1 handler(s) for this service...
Service "rcatDB" has 1 instance(s).
  Instance "rcatDB", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

EDIT:

[oracle@localhost ~]$ unset TWO_TASK
[oracle@localhost ~]$ . ./.profile_productionDB
[oracle@localhost ~]$ sqlplus sys/oracle as sysdba

SQL*Plus: Release 12.2.0.1.0 Production on Tue Jan 15 05:33:45 2019

Copyright (c) 1982, 2016, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> select name from v$database;

NAME
---------
PRODDB

SQL>