oracle - ORA-12505。TNS: リスナーは現在、接続記述子で指定された SID を認識していません

Question

SQL plus から Oracle データベースに接続できません。これは私が得るエラーメッセージです:

Status: Failure -Test failed: Listener refused the connection with the following error: ORA-12505. TNS: listener dos not currently know of SID given in connect descriptor

これは、listener.oraの構成です。

# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.104)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle

sqlnet.ora:

# sqlnet.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

ADR_BASE = /u01/app/oracle

tnsnames.ora:

# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

ORACLE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.104)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = oracle)
    )
  )

どうすれば問題を解決できますか?

PS これはコマンド lsnrctl status の出力です

[oracle@localhost bin]$ ./lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-JAN-2013 14:38:00

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                08-JAN-2013 14:37:06
Uptime                    0 days 0 hr. 0 min. 54 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.104)(PORT=1521)))
The listener supports no services
The command completed successfully
[oracle@localhost bin]$