Error: Databaselink Oracle XE - MySQL

Question

Hi,
I try to set up a database link from my OracelXE to a MySQL server.
I know here are a lot of discussion for this problem, but I read a lot and tried a lot, but it's not working.
So I want to explain you what I did and give you my configuration, maybe you will find the error:
My System properties
Windows 7 64bit
Oracle XE (11.2)
1. I downloaded MySQL ODBC driver and set up a System-DNS in data source administration -> Test OK
2. Following an old instructions I found in www (Making a connection from Oracle XE to MySQL with ODBC - APEX-AT-WORK by Tobias Arnhold and Oracle und MySQL vereinigen, – HS Service und Datenbanklink | hman-projects) I have done the following
     create file initMYSQL_DB.ora in C:\oraclexe\app\oracle\product\11.2.0\server\hs\admin:
# This is a sample agent init file that contains the HS parameters that are
# needed for an ODBC Agent.
# HS init parameters
HS_FDS_CONNECT_INFO = MYSQL_DB
HS_FDS_TRACE_LEVEL = OFF
# Environment variables required for the non-Oracle system
#set =
update Listener.ora (found it in path C:\oraclexe\app\oracle\product\11.2.0\server\hs\admin and C:\oraclexe\app\oracle\product\11.2.0\server\network\admin, so I'm not sure which one will be used, I changed the one in network path and copied it to hs path, sone this also for the tnsnames)
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
      (PROGRAM = extproc)
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
      (PROGRAM = extproc)
    (SID_DESC=
      (SID_NAME=MYSQL_DB)
      (ORACLE_HOME=C:\oraclexe\app\oracle\product\11.2.0\server)
      (PROGRAM=dg4odbc)
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = PC.local)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
tnsnames.ora
XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = PC.local)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
MYSQL_DB =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(Port = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = MYSQL_DB)
    (HS = OK)
3. Making a tnsping MYSQL_DB is working
C:\oraclexe\app\oracle\product\11.2.0\server\bin>tnsping MYSQL_DB
TNS Ping Utility for 64-bit Windows: Version 11.2.0.2.0 - Production on 22-OKT-2
014 13:02:09
Copyright (c) 1997, 2014, Oracle.  All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = localhost)(Port = 1521))) (CONNECT_DATA = (SERVICE_NAME = MYSQL_DB)) (HS
= OK))
OK (20 msec)
4. Creating database link in SQL Developer
create database link MYSQL_DB
  connect to "mysqluser" identified by "mysqluserpwd"
  using 'MYSQL_DB';
is successful, but the testing the link, bringing back the following error:
Bei der Ausführung des angeforderten Vorgangs ist ein Fehler aufgetreten:
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 MYSQL_DB
28545. 0000 -  "error diagnosed by Net8 when connecting to an agent"
*Cause:    An attempt to call an external procedure or to issue SQL
           to a non-Oracle system on a Heterogeneous Services database link
           failed at connection initialization.  The error diagnosed
           by Net8 NCR software is reported separately.
*Action:   Refer to the Net8 NCRO error message.  If this isn't clear,
           check connection administrative setup in tnsnames.ora
           and listener.ora for the service associated with the
           Heterogeneous Services database link being used, or with
           'extproc_connection_data' for an external procedure call.
Herstellercode 28545
Can anybody find the error???
Thanks for your help,
chrissy

Answer 1

sHi Mike,
sorry for the late answer ...
I have just done what you told me.
After reload of lsnrctl I get the following output.
C:\>lsnrctl services listener
LSNRCTL for 64-bit Windows: Version 11.2.0.2.0 - Production on 10-NOV-2014 08:52
:34
Copyright (c) 1991, 2014, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
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 "MYSQL_DB" has 1 instance(s).
  Instance "MYSQL_DB", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
Service "XEXDB" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
    Handler(s):
      "D000" established:0 refused:0 current:0 max:1022 state:ready
         DISPATCHER <machine: PC, pid: 4652>
         (ADDRESS=(PROTOCOL=tcp)(HOST=PC.local)(PORT=65125))
Service "xe" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
The command completed successfully
C:\>lsnrctl status listener
LSNRCTL for 64-bit Windows: Version 11.2.0.2.0 - Production on 10-NOV-2014 08:53
:08
Copyright (c) 1991, 2014, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 11.2.0.2.0 - Produ
ction
Start Date                22-OKT-2014 10:20:51
Uptime                    18 days 23 hr. 32 min. 17 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\listener.ora
Listener Log File         C:\oraclexe\app\oracle\diag\tnslsnr\PC\listener\alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=PC.local)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=PC.local)(PORT=8080))(Presentation=HTTP)(Session=RAW))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "MYSQL_DB" has 1 instance(s).
  Instance "MYSQL_DB", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XEXDB" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
Service "xe" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully
Thanks,
chrissy