Once again - ORA-28545: error diagnosed by Net8 when connecting to an agent

Question

I'm trying to connect to a SQL server 2012
I've make the ODBC connections (called MOFIBO2, MOFIBO3, MOFIBO4) and i've a succesfull connection to then SQL server.
The Oracle Database is:
Oracle Database 11g Release 11.2.0.3.0 - 64bit Production
I've made 3 versions of the initdg4odbc.ora and they all look the same:
# This is a sample agent init file that contains the HS parameters that are
# needed for the Database Gateway for ODBC
# HS init parameters
HS_FDS_CONNECT_INFO = MOFIBOx (MOFIBO2, MOFIBO3 and MOFIBO4)
HS_FDS_TRACE_LEVEL = off
# Environment variables required for the non-Oracle system
#set <envvar>=<value>
My lisener.ora look like this:
# listener.ora Network Configuration File: C:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = resp-ora01)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
  (SID_DESC =
   (SID_NAME = PLSExtProc)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = extproc)
  (SID_DESC =
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (SID_NAME = RESPTEST)
(SID_DESC =
   (SID_NAME=MOFIBO2)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
(SID_DESC =
   (SID_NAME=MOFIBO3)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
(SID_DESC =
   (SID_NAME=MOFIBO4)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
ADR_BASE_LISTENER = C:\app\Administrator\product\11.2.0\dbhome_1\log
And my mofibo part of then tnsnames.ora look like this (I've made three variants because different "manuals" uses different methods ):
MOFIBO2=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA=
    (SID=MOFIBO2)
   (HS=OK)
MOFIBO3=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SID_NAME = MOFIBO3)
   (HS=OK)
MOFIBO4=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = MOFIBO4)
   (HS=OK)
When tnsping to the three versions i get this:
C:\Users\Administrator>tnsping mofibo2
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:17
Copyright (c) 1997, 2011, Oracle.  All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA= (SID=MOFIBO2)) (
HS=OK))
OK (10 msec)
C:\Users\Administrator>tnsping mofibo3
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:23
Copyright (c) 1997, 2011, Oracle.  All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA = (SERVER = DEDIC
ATED) (SID_NAME = MOFIBO3)) (HS=OK))
OK (10 msec)
C:\Users\Administrator>tnsping mofibo4
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:27
Copyright (c) 1997, 2011, Oracle.  All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA = (SERVER = DEDIC
ATED) (SERVICE_NAME = MOFIBO4)) (HS=OK))
OK (0 msec)
I created three database link with then following (username and password was in wright case):
create database link MOFIBODB2 connect to "<username>" identified by "<password>" using 'MOFIBO2';
create database link MOFIBODB3 connect to "<username>" identified by "<password>" using 'MOFIBO3';
create database link MOFIBODB4 connect to "<username>" identified by "<password>" using 'MOFIBO4';
when i was trying to select from a table (select * from customers@<DATABASELINKHERE>) i get the errors (substitute MOFIBO2 with MOFIBO3/4 and same error occours):
SQL> select * from customers@MOFIBODB2;
select * from customers@MOFIBODB2
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from MOFIBODB2
What is my mistake?

Answer 1

Hi,
  In the listener.ora you have the host as -
(HOST = resp-ora01)
but in the tnsnames.ora entries you have -
(HOST=resp-ora02)
The tnsnames.ora host must be the same as the listener host.
Unless you have a listener running on resp-ora02 it isn't clear why the tnsping returns a result.
Change the host in the tnsnames.ora and let us know what happens.
Regards,
Mike