Setup heterogeneous service to connect MySQL from Oracle

Question

Hello,
I have got an issue with heterogeneous service configuration like
SQL> select * from colour@mysql_local;
select * from colour@mysql_local
ERROR at line 1:
ORA-28546: connection initialization failed, probable Net8 admin error
ORA-02063: preceding line from MYSQL_LOCAL
If anybody can advise me what is wrong in conf or might be I missed something
Thanks
Environment:
OS: Windows 7 Pro
Oracle 11.2.0.3
MySQL: 5.6
Configuration:
System ODBC configured : MYSQL_LOCAL
Tested connection - sucessful
Listener
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\app\product\11.2.0\dbhome_1\bin\oraclr11.dll")
(SID_DESC =
(SID_NAME = MYSQL_LOCAL)
(ORACLE_HOME = C:\app\product\11.2.0\dbhome_1)
(PROGRAM=dg4odbc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ADR_BASE_LISTENER = C:\app
Tnsnames.ora
MYSQL_LOCAL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SID = MYSQL_LOCAL)
(HS = OK)
initdg4odbc.ora
HS_FDS_CONNECT_INFO = mysql_local
HS_FDS_TRACE_LEVEL = OFF
SQL> conn / as sysdba
SQL> create public database link MYSQL_LOCAL connect to root identified by 12346 using 'MYSQL_LOCAL';
C:\Windows\system32>lsnrctl status
LSNRCTL for 64-bit Windows: Version 11.2.0.3.0 - Production on 08-MAY-2013 17:44:24
Copyright (c) 1991, 2011, 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 11.2.0.3.0 - Production
Start Date 08-MAY-2013 17:44:05
Uptime 0 days 0 hr. 0 min. 18 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\app\product\11.2.0\dbhome_1\network\admin\listener.ora
Listener Log File C:\app\diag\tnslsnr\D-9RGC8X1\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "MYSQL_LOCAL" has 1 instance(s).
Instance "MYSQL_LOCAL", status UNKNOWN, has 1 handler(s) for this service...
Service "QA_IMS_MYSQL" has 1 instance(s).
Instance "QA_IMS_MYSQL", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
C:\Windows\system32>tnsping mysql_local
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 08-MAY-2013 17:44:36
Copyright (c) 1997, 2011, Oracle. All rights reserved.
Used parameter files:
C:\app\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 = localhost)(PORT = 1521)) (CONNECT_DATA = (SID = MYSQL_LOCAL) (HS = OK)))
OK (0 msec)
SQL> conn / as sysdba
Connected.
SQL> select * from colour@mysql_local;
select * from colour@mysql_local
ERROR at line 1:
ORA-28546: connection initialization failed, probable Net8 admin error
ORA-02063: preceding line from MYSQL_LOCAL

Answer 1

Hi,
The gateway file initMYSQL_LOCAL.ora should be placed in the directory -
$ORACLE_HOME\hs\admin
which is the expected location. In your setup this should be -
C:\app\product\11.2.0\dbhome_1\hs\admin
If the file is already in that location then make sure that in the listener.ora and tnsnames.ora that in each section every line except the first line starts with at least one space -
SID_LIST_LISTENER =
<space>(SID_LIST =
<space>(SID_DESC =
LISTENER =
<space>(DESCRIPTION_LIST =
Tnsnames.ora
MYSQL_LOCAL =
<space>(DESCRIPTION =
<space>(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
However, there is also a problem with the tnsnames.ora file. You have -
Tnsnames.ora
MYSQL_LOCAL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SID = MYSQL_LOCAL)
(HS = OK)
) <=== move this bracket
but it should be -
Tnsnames.ora
MYSQL_LOCAL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SID = MYSQL_LOCAL)
) <=== bracket moved here
(HS = OK)
Of course, with spaces as shown above. They are often lost in the forums.
You may also need to change -
(HOST = localhost)
to -
(HOST = <actual host name>)
but it depends on your setup.
Try these changes and let me know what happens.
Regards,
Mike