ORA-28500 and ORA-02063 while connecting MySQL from Oracle-

Question

Dear All,
My Database is Oracle 11gR2 Rac of 2 nodes and on Linux 64-Bit operating system.
Version of my MySQL database is 5.5.17 it is on Linux 32-Bit operating system.
I am trying to connect MySQL database from Oracle database using a database link.
These are the step by step process that I am following to achieve my target. All my processes are on one node of Oracle RAC.
1)
Yum install mysql-connector-odbc
Yum install unixODBC
2)
Edit file /etc/odbc.ini
[test]
Driver = /usr/lib64/libmyodbc3.so
Description = MySQL ODBC 3.51 Driver DSN
SERVER = 10.0.0.1
PORT = 3306
USER = test
Password = test
Database = test
OPTION = 3
SOCKET =
3)
Edit file /etc/odbcinst.ini
[MySQL]
Description = ODBC for MySQL
Driver = /usr/lib64/libmyodbc3.so
Setup = /usr/lib64/libodbcmyS.so
FileUsage = 1
4) test connection
isql –v test test test
Returns:
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
SQL>
5) Now I edit listener.ora file and add the entry. After entry my listener.ora file is like this:
LISTENER =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER))
(ADDRESS = (PROTOCOL = TCP)(HOST=testnode1)(PORT = 1521))
# line added by Agent
LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = LISTENER_SCAN1))
# line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1 = ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER = ON # line added by Agent
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
(PROGRAM = extproc)
(SID_DESC =
(PROGRAM = dg4odbc)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
(SID_NAME = test)
(ENVS=LD_LIBRARY_PATH = /usr/local/lib:/u01/app/oracle/product/11.2.0/dbhome_1/lib)
6) After these entries the listener status after RESTART is as following:
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 27-DEC-2011 01:19:32
Uptime 0 days 9 hr. 31 min. 12 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /u01/app/grid/diag/tnslsnr/racnode1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=testnode1)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, 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 "test" has 1 instance(s).
Instance "test", status UNKNOWN, has 1 handler(s) for this service...
Service "testdb" has 1 instance(s).
Instance "testdb1", status READY, has 1 handler(s) for this service...
Service "racdbXDB" has 1 instance(s).
Instance "testdb1", status READY, has 1 handler(s) for this service...
The command completed successfully
7) Then in the tnsnames.ora file I added the following entry:
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = IPC)
(KEY = EXTPROC1521)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
test =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SID = test)
(HS = OK)
When i tnsping test, it works.
8) I edit the .bash_profile file for Oracle
ORACLE_HOME, ORACLE_BASE were already pointing to the correct destination, I added:
LD_LIBRARY_PATH=/usr/local/lib:/u01/app/oracle/product/11.1.0/db_1/lib:/u01/app/oracle/product/11.2.0/dbhome_1/hs/lib:/usr/lib64:/usr/lib
export LD_LIBRARY_PATH
ODBCINI=/etc/odbc.ini
export ODBCINI
ODBCINSTINI=/etc/odbc.ini
export ODBCINSTINI
ODBCSYSINI=/etc
export ODBCSYSINI
9) Then i configured $ORACLE_HOME/hs/admin/inithsodbc.ora
And Modified these lines:
HS_FDS_CONNECT_INFO = test
HS_FDS_TRACE_LEVEL = ON
HS_FDS_TRACE_FILE_NAME = odbc_test.log
HS_FDS_TRACE_LEVEL = 4
HS_FDS_SHAREABLE_NAME = /usr/lib64/libodbc.so
HS_FDS_SUPPORT_STATISCTICS = FALSE
HS_LANGUAGE = AMERICAN_AMERICA.WE8ISO8859P1
set ODBCINI = /etc/odbc.ini
10) Then i created a database link with the following command:
Create public database link test connect to test identified by test using ‘test’;
I tried username and password in database link with double quotes also.
11) Now Finally when I try to select records from mysql table:
select count(*) from "table"@"test"; -- I have tried with and without double quotes
I get the following error:
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
ORA-02063: preceding line from TEST
How to get through this error, and how to check logs for HS?
Your help is required.
Regards, Imran
Edited by: misterimran on Dec 27, 2011 1:21 PM

Answer 1

Hi,
In your listener.ora for the DG4ODBC entry you had -
(ENVS=LD_LIBRARY_PATH = /usr/local/lib:/u01/app/oracle/product/11.2.0/dbhome_1/lib)
but this should also include the path for the driver manager directory which in your case is /usr/lib64 so could you add this ?
The error -
Failed to load ODBC library symbol: /usr/lib64/libmyodbc3.so(SQLSetDescRec)
indicates the /usr/lib64 directory cannot be accessed.
The entry should then look like -
(SID_DESC =
<space>(PROGRAM = dg4odbc)
<space>(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
<space>(SID_NAME = test)
<space>(ENVS=LD_LIBRARY_PATH = /usr/local/lib:/usr/lib64:/u01/app/oracle/product/11.2.0/dbhome_1/lib)
<space>)
The spaces may have bene lost when posting but there should be at least one space in the file as indicated by the <space>.
After making the change then stop and start the listener.
If you still have problems then please post again the current versions of the configuration files, the full errors shown in SQLPLUS for a select and the output from a debug trace showing the errors.
The information shows you are using the 3.51 MySQL ODBC driver so could you also try with the latest version of the 5.1 driver and see if you have the same problem ?
Regards,
Mike