Unable to connect to an instance by using EM but properly connect with SQL * more

Hello

I followed the following steps (from the document s/n 2 days):

1. I created a model (including the database) to an instance named "orcl" using DBCA, before we proceed to create the model, DBCA informed me that the Forum might be stopped, I told him to go ahead.

2. the model has been successfully created.

3. I am now unable to connect to the instance orcl using EM, but I can connect to this instance without any problem using SQL * more.

Question: Why am I not able to connect to the instance by using EM? and what should I do to fix this?

Thank you very much for your help,

John.

PS: in case it may be useful, the listener tnsnames and Sqlnet files follow:

# listener.ora Network Configuration File: E:\Oracle\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\Oracle\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\Oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = ORACLE2DAY1)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = E:\Oracle

# tnsnames.ora Network Configuration File: E:\Oracle\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

DBCA =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ORACLE2DAY1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = dbca.localsite.com)
    )
  )

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

LISTENER_ORCL =
  (ADDRESS = (PROTOCOL = TCP)(HOST = ORACLE2DAY1)(PORT = 1521))


ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ORACLE2DAY1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl.localsite.com)
    )
  )

# sqlnet.ora Network Configuration File: E:\Oracle\product\11.2.0\dbhome_1\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)

I think you change some configuration of your system as domain/IP address/host name.
You need

set ORACLE_SID=orcl
emca -deconfig dbcontrol db -repos drop
emca -config dbcontrol db -repos create

then after result

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