TNS-12541: TNS: нет слушателя

Я новичок в oracle dba, поэтому мне нужна помощь, которая могла бы прийти мне в голову. Я установил свою базу данных oracle 11gr2 на виртуальную машину с ОС OEL 5.7 и хочу подключить эту удаленную базу данных с toad32bit. Итак, я перешел по некоторым полезным ссылкам, загрузил и установил win32_11gR2_client на ОС Windows 7 64bit. Кроме того, изо всех сил стараюсь следовать инструкциям, мой клиент не может подключиться к моей удаленной базе данных оракула. ​​На стороне клиента, работающем с cmd для tnsping sidname, всегда нет прослушивателя tns с ошибкой, как я упоминал выше

краткое описание МАШИНЫ LINUX:

listener.ora

LISTENER =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
  (ADDRESS = (PROTOCOL = TCP)(HOST = testhost.testdomain.com)(PORT = 1521))
)
)
ADR_BASE_LISTENER = /u01/app/oracle

tnsnames.ora

ORCL =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = testhost.testdomain.com)(PORT = 1521))
  (CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl.testdomain.com)
  )
 )

sqlnet.ora

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
ADR_BASE = /u01/app/oracle

прослушиватель состояния lsnrctl

Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                03-FEB-2014 15:08:43
Uptime                    0 days 1 hr. 32 min. 59 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/testhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=testhost.testdomain.com)(PORT=1521)))
Services Summary...
Service "orcl.testdomain.com" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB.testdomain.com" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully

прослушиватель службы lsnrctl

 Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
 Services Summary...
 Service "orcl.testdomain.com" has 1 instance(s).
 Instance "orcl", status READY, has 1 handler(s) for this service...
 Handler(s):
 "DEDICATED" established:0 refused:0 state:ready
 LOCAL SERVER
 Service "orclXDB.testdomain.com" has 1 instance(s).
 Instance "orcl", status READY, has 1 handler(s) for this service...
 Handler(s):
 "D000" established:0 refused:0 current:0 max:1022 state:ready
 DISPATCHER <machine: testhost.testdomain.com, pid: 5349>
 (ADDRESS=(PROTOCOL=tcp)(HOST=testhost.testdomain.com)(PORT=13094))
 The command completed successfully

WINDOWS 7 ОПИСАНИЕ КЛИЕНТА C: \ oracle \ product \ 11.2.0 \ client_1 \ network \ admin ENV TNS_ADMIN = C: \ oracle \ product \ 11.2.0 \ client_1 \ network \ admin

ПРИМЕЧАНИЕ. В СЛУЖБАХ WINDOWS НЕТ НИКАКИХ СВЯЗАННЫХ С ORACLE УСЛУГ (СРЕДСТВО НЕТ).

мой клиент tnsnames.ora

ORCL =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = testhost.testdomain.com)(PORT = 1521))
  (CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl.testdomain.com)
   )
  )

C: \ Users \ farhan> tnsping orcl (и результат)

Used parameter files:
C:\oracle\product\11.2.0\client_1\network\admin\sqlnet.ora

Used TNSNAMES adapter to resolve the alias 
Attempting to contact (DESCRIPTION = (ADDTESS_LIST = (ADDRESS - (PROTOCOL = TCP (HOST = 
testhost.testdomain.com)(PORT = 1521))) (CONNECT_DATA= (SERVER = DEDICATIED) (SERVICE_NAME
= orcl) (INSCTANCE_NAME = orcl) (GLOBAL_NAME = orcl.testdomain.com)(RDB_DATABSE =   orcl)) (TYPE_OF_SERVICE = dedicaated))
TNS-12541 : TNS:no listener

cat / etc / hosts (результат)

      # Do not remove the following line, or various programs
      # that require network functionality will fail.
      #127.0.0.1              testhost.testdomain.com testhost localhost.localdomain localhost
      127.0.0.1               localhost.localdomain localhost
      #10.10.1.114             testhost.testdomain.com testhost
      192.168.0.103   testhost.testdomain.com testhost
      ::1             localhost6.localdomain6 localhost6

для дальнейших инструкций, которые я попросил опубликовать

# netstat -an | grep 1521 | grep tcp | grep LISTEN
tcp        0      0 0.0.0.0:1521                0.0.0.0:*                   LISTEN      
[root@testhost ~]# grep testhost /etc/hosts
#127.0.0.1              testhost.testdomain.com testhost localhost.localdomain localhost
#10.10.1.114             testhost.testdomain.com testhost
192.168.0.103   testhost.testdomain.com testhost
[root@testhost ~]# dig +short testhost.testdomain.com
174.137.125.92