NET8 timeout with ODBC Gateway

Question

Local:
Database: Oracle XE 11gR2
Oracle ODBC Gateway 11g
Windows 7
Sybase SQL Anyhwere 12 client
Remote:
Database: Sybase SQL Anywhere 10
Windows Server 2008 R2
====================
SQL:
select * from mytable@dblink:
Error returned:
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 dblink
Files:
initdlink.ora
# 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 = dblink
#HS_FDS_TRACE_LEVEL = 255
HS_LANGUAGE=american_america.we8iso8859p1
HS_NLS_NCHAR=UTF-8
listener.ora
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 = XE)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(SID_DESC =
(SID_NAME = dblink)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\gtw)
(PROGRAM = dg4odbc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
tnsnames.ora
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
dblink =
(DESCRIPTION =
(ADDRESS =
(PROTOCOL = TCP)
(HOST = localhost)
(PORT = 1521)
(CONNECT_DATA =
(SID = dblink))
(HS=OK))
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)
==========================
(1) Similar setup works ok on Linux connecting to remote Sybase on Windows. But get error below when running on Windows 7.
(2) Similar setup from Windows7 to Windows 2008 R2 works fine when ODBC Gateway on remote Windows 2008 server.
(3) ODBC connectivity has been verified as ok to remote Sybase database on Windows 2008 server.
(4) tnsping dblink verified ok.
Problems started when moving ODBC Gateway to local system where Oracle target database resides.
Please advise.
Added to initdblink.ora the following (no change in results):
HS_KEEP_REMOTE_COLUMN_SIZE = ALL
HS_NLS_LENGTH_SEMANTICS = CHAR
Edited by: user601798 on Dec 4, 2012 11:59 AM

Answer 1

You're mixing different OH's in your listener. The gateway is located in C:\oraclexe\app\oracle\product\11.2.0\gtw, but the database and the listener in: C:\oraclexe\app\oracle\product\11.2.0\server
When you're using DG4ODBC you can use the gateway which is automatically installed in the database home -> you'll find there as well a HS directory and the dg4odbc executable. The other option is to use separate listeners for both installations. For example using the Oracle database listener on port 1521 for the database connections and 1522 for the gateway.
If you really want to use one listener (which is not the preferred solution), then you need also to specify the location to the executable, similar to:
<space>(SID_DESC =
<space><space>(SID_NAME = dblink)
<space><space>(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\gtw)
<space><space>(PROGRAM = C:\oraclexe\app\oracle\product\11.2.0\gtw\dg4odbc)
<space>)
After changing the listener.ora file, please STOP and STAT the listener using lsnrctl utility and provide its output. Also provide the output of tnsping dblink.
- Klaus