Tnsping timed out using dg4odbc from Oracle to MYSQL through ODBC

Question

Hi,
I encountered problem when trying to connect from Oracle to MYSQL using dg4odbc, hope you can shed some light
Oracle database is 11.1.0.7 on SUSE Linux 64-bit.
Since the application which runs on MYSQL DB only offers ODBC driver on Windows platform, so I installed the 32-bit ODBC driver (from ServiceNow) on a 32-bit windows server (driver download from http://wiki.service-now.com/index.php?title=ODBC_Driver) .
created system DSN: MYSQLDEV, The DSN connection works fine. I then installed Oracle 11.2.0.1 gateway for ODBC 32-bit on the same windows server, the following configurations were done:
On 32-bit Windows server:
in gatewayHome\hs\admin
initMYSQLDEV.ora:
# HS init parameters
HS_FDS_CONNECT_INFO = MYSQLDEV
HS_FDS_TRACE_LEVEL = DEBUG
in gatewayHome\network\admin:
listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = abcdes.sda.sdva.com)(PORT = 1521))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME=MYSQLDEV)
(ORACLE_HOME=C:\product\11.2.0\tg_1)
(PROGRAM=dg4odbc)
ADR_BASE_LISTENER = C:\product\11.2.0\tg_1
stop and started listener on windows server and check listener status
C:\product\11.2.0\tg_1\bin>lsnrctl status listener
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 29-MAR-2012 21:42:08
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=abcdes.sda.sdva.com)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Produ
ction
Start Date 29-MAR-2012 21:11:36
Uptime 0 days 0 hr. 30 min. 32 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\product\11.2.0\tg_1\network\admin\listener.ora
Listener Log File c:\product\11.2.0\tg_1\diag\tnslsnr\abcdes\list
ener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=abcdes.sda.sdva.com)(PORT=1521)))
Services Summary...
Service "MYSQLDEV" has 1 instance(s).
Instance "MYSQLDEV", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
On Linux server where Oracle DB resides.
Added the following tns entry "jelly" on the Linux server ORACLE_HOME/network/admin:
jelly =
(DESCRIPTION=
(ADDRESS=(PROTOCOL=TCP)
(HOST=abcdes.sda.sdva.com)
(PORT=1521))
(CONNECT_DATA=(SID=MYSQLDEV))(HS=OK)
tnsping from Linux server (64-bit) failed with timeout error:
tnsping jelly
TNS Ping Utility for Linux: Version 11.1.0.7.0 - Production on 29-MAR-2012 21:12:38
Copyright (c) 1997, 2008, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP) (HOST=abcdes.sda.sdva.com) (PORT=1521)) (CONNECT_DATA=(SID=MYSQLDEV))(HS=OK))
TNS-12535: TNS:operation timed out
tnsping from Windows server works fine: (added same tnsnames entry on windows server for testing purpose only)
C:\product\11.2.0\tg_1\bin>tnsping jelly
TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 29-MAR-2
012 21:45:20
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\product\11.2.0\tg_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=abcdes.sda.sdva.com)(PORT=1521)) (CONNECT_DATA=(SID=MYSQLDEV)) (HS=OK))
OK (20 msec)
if listener is not listening to the service, then the tnsping on the windows server should fail as well.
I don't know why only the tnsping from Linux failed, is it due to the 32-bit ODBC uncompatibility with 64-bit oracle server? or my configuration problem?
Of course, when I created the DB link from oracle, the connection failed with
create database link mysqldev connect to xxxx identified by "xxxxx" using 'jelly';
Database link created.
select * from tab1;
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 MYSQLDEV
Thanks for your help,

Answer 1

Hi Mike,
This is part of the tnsping.trc file which contains the error. IP address is in the tnsnames entry with this tnsping.
nsopen: opening transport...
nttcon: entry
nttcon: toc = 1
nttcnp: entry
nttcnp: creating a socket.
nttcnp: exit
nttcni: entry
nttcni: Tcp conn timeout = 0 (ms)
nttcni: trying to connect to socket 5.
ntt2err: entry
ntt2err: soc 5 error - operation=1, ntresnt[0]=505, ntresnt[1]=110, ntresnt[2]=0
ntt2err: exit
nttcni: exit
nttcon: exit
nserror: entry
nserror: nsres: id=0, op=65, ns=12535, ns2=12560; nt[0]=505, nt[1]=110, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
nsopen: unable to open transport
nsiocancel: entry
nsiofrrg: entry
nsiofrrg: cur = 53b9f8
nsbfr: entry
nsbaddfl: entry
nsbaddfl: normal exit
nsbfr: normal exit
nsiofrrg: exit
nsiocancel: exit
nsvntx_dei: entry
nsvntx_dei: exit
nsopenfree_nsntx: nlhthdel from mplx_ht_nsgbu, ctx=53a7e0 nsntx=53ade0
nsiocancel: entry
nsiofrrg: entry
nsiofrrg: exit
nsiocancel: exit
nsmfr: entry
nsmfr: 2712 bytes at 0x53ade0
nsmfr: normal exit
nsmfr: entry
nsmfr: 1528 bytes at 0x53a7e0
nsmfr: normal exit
nsopen: error exit
nscall: error exit
nscall: entry
nscall: connecting...
nsclose: entry
nsclose: normal exit
nladget: entry
nladget: exit
nsmfr: entry
nsmfr: 264 bytes at 0x528900
nsmfr: normal exit
nladtrm: entry
nladtrm: exit
nscall: error exit
nlse_term_audit: entry
nlse_term_audit: exit
Thanks,