TNSPING OK, mas o sqlplus fornece o ORA-12154?

Eu tenho o Oracle 11 em execução em um servidor Windows e estou logado no mesmo servidor tentando usar o SQL Plus. Quando tento conectar, recebo um ORA-12154, embora TNSPING e vários outros diagnósticos pareçam OK.

Alguém pode sugerir por quê? Cargas de detalhes abaixo.

Eu posso usar o sqlplus se eu usarEZCONNECT como isso ..

sqlplus EST/[email protected]/ORCL

... mas se eu tentar conectar usandoTNSNAMES como isso ...

sqlplus EST/EST@ORCL

... Eu recebo ...

ORA-12154: TNS:could not resolve the connect identifier specified

TNSPING funciona bem

C:\Documents and Settings\user1>tnsping ORCL

TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 12-NOV-2013 12:41:14

Copyright (c) 1997, 2010, Oracle.  All rights reserved.

Used parameter files:
E:\app\Administrator\product\11.2.0\dbhome_2\network\admin\sqlnet.ora


Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.15)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ORCL))
)
OK (20 msec)

E aouvinte se parece com isso :

C:\Documents and Settings\user1>lsnrctl services

LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 14-NOV-2013 12:02:59

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
Service "orcl" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:55 refused:0 state:ready
         LOCAL SERVER
Service "orclXDB" 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: MARIEL, pid: 2400>
         (ADDRESS=(PROTOCOL=tcp)(HOST=mariel)(PORT=1045))
The command completed successfully

E isto

C:\Documents and Settings\user1>lsnrctl status

LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 14-NOV-2013 12:29:21

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production
Start Date                14-NOV-2013 11:41:10
Uptime                    0 days 0 hr. 48 min. 11 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   E:\app\Administrator\product\11.2.0\dbhome_2\network\admin\listener.ora
Listener Log File         e:\app\administrator\diag\tnslsnr\mariel\listener\alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.10.15)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully

Aqui estão os vários arquivos de configuração:

listener.ora

# listener.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_2\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_2)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_2\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.15)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = E:\app\Administrator

tnsnames.ora

# tnsnames.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_2\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
    )
  )

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.15)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = ORCL)
    )
  )

sqlnet.ora

# sqlnet.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_2\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

# This file is actually generated by netca. But if customers choose to 
# install "Software Only", this file wont exist and without the native 
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

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