How to do a Generic Connectivity (ODBC) ?

Question

Hello,
Generic Connectivity provide Oracle Database to connect another
database via ODBC. In my case, it is Oracle 8.1.6 which connects
to Sybase Enterprise 11 on Win NT. The Module "Generic
Connection" is installed. I view it by the Oracle Universal
Installer and I have configured the Windows ODBC Manager to
connect to Sybase.
This is what I've done step by step:
1. C:\Oracle\Ora81\hs\Admin\iniths_syb.ora
HS_FDS_CONNECT_INFO = SPS_NACIONAL
HS_FDS_TRACE_LEVEL = ON
HS_FDS_TRACE_FILE_NAME = hs_syb.log
2. C:\Oracle\Ora81\Network\Admin\Listener.ora
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = nacional)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = oracle)
(ORACLE_HOME = c:\Oracle\Ora81)
(SID_NAME = oracle)
(SID_DESC =
(SID_NAME = hs_syb)
(ORACLE_HOME = c:\Oracle\Ora81)
(PROGRAM = hs_syb)
I reload the listener by the following command :
lsnrctl
stop
start
3. C:\Oracle\Ora81\Network\Admin\Tnsname.ora
ORACLE =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = host)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = oracle)
hs_syb =
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = host)(PORT = 1521))
(CONNECT_DATA =
(SID=hs_syb)
(HS = OK)
I test the tnsname at the prompt command line :
tnsping hs_syb
(It's OK)
4. Database Link
CREATE PUBLIC DATABASE LINK syb
USING 'hs_syb';
5. Test database link
select * from emp@syb;
And Errors occur :
ORA-28509: unable to establish a connection to non-Oracle system
ORA-02063: preceding line from SYB
6. I read again the documentation
http://technet.oracle.com/doc/oracle8i_816/server.816/a76960/hs_g
enco.htm
and I found some tables to be feed with data by the HS_ADMIN
packtage :
This is what I have added :
EXEC DBMS_HS.CREATE_FDS_CLASS ('hs_syb','Uses ODBC Driver')
EXEC DBMS_HS.CREATE_FDS_INST ('hs_syb','hs_syb','SYC Sybase
System 10/11')
EXEC DBMS_HS.CREATE_INST_INIT
('hs_syb','hs_syb','HS_DB_NAME','SYBDATA','F')
(Drop procedure :
EXEC DBMS_HS.DROP_INST_INIT
('hs_syb','hs_syb','HS_FDS_CONNECT_INFO')
EXEC DBMS_HS.DROP_FDS_INST ('hs_syb','hs_syb')
EXEC DBMS_HS.DROP_FDS_CLASS ('hs_syb');
I test one more time the connection,
And I have the same error message as step 5.
7. I put in the initialization file (initoracle.ora) the
parameter
Hs_Autoregister = true (It is true by default and it doesn't
change errors. Is it another parameters for HS ?)
In fact, I don't really understand the notion of "AGENT" for HS
(Heterogeneous Services) in Oracle. Is it something to enable or
is it automatic because the iniths_syb.ora file is in the path
ORACLE_HOME\hs\admin ???
What is it missing for the Generic Connectivity ? Any
suggestion ? Say me what is the wrong step in this process or
what I have forgotten.
Thank you in advance.
Jobar Team

Answer 1

Hello
You're right, step two needs to set (PROGRAM = hsodbc). I understand this when I saw hsodbc.exe in the path ORACLE_HOME\Bin (and at prompt I try agtctl.exe but without sucess, an utility for Heterogeneous Services).
Now when I test the connection I can hear Oracle running something.
This is what I've done step by step (following my previous message)I test with Sybase Entreprise and Sybase Anywhere :
8. C:\Oracle\Ora81\Database\initoracle.ora
I set a parameter in init file and I reload Oracle database :
global_names = false
OR in SQL+
alter session set global_names=false;
WITH SYBASE ENTREPRISE
9. C:\Oracle\Ora81\hs\Admin\iniths_syb.ora
At the beginning my iniths_syb.ora file was wrong then I correct parameters by viewing errors in C:\Oracle\Ora81\hs\trace :
#Using a dsn file generate by the Windows ODBC Manager
HS_FDS_CONNECT_INFO="FILEDSN=C:\sybase.dsn"
HS_FDS_TRACE_LEVEL = ON
HS_FDS_TRACE_FILE_NAME = C:\hs_syb.log
set SYBASE=C:\\Sybase\\ASE
Contents of sybase.dsn
[ODBC]
DRIVER=Sybase System 11
UID=USERNAME
SRVR=SVRNAME
DB=master
10. Test Database link
CREATE PUBLIC DATABASE LINK syb
CONNECT TO USERNAME IDENTIFIED BY SECRET
USING 'hs_syb';
select * from anytable@syb;
ORA-00942: table or view does not exist
[Transparent gateway for ODBC]393330(0,0,1[[]])
ORA-02063: preceding 2 lines from SYB
I try to set parameters in iniths_syb.ora without success :
HS_DB_DOMAIN=SVRNAME
HS_DB_NAME=master
HS_FDS_DEFAULT_OWNER=USERNAME
WITH SYBASE ANYWHERE
11. C:\Oracle\Ora81\hs\Admin\iniths_any.ora
#Using a dsn file generate by the Windows ODBC Manager
HS_FDS_CONNECT_INFO="FILEDSN=C:\anywhere.dsn"
HS_FDS_TRACE_LEVEL = ON
HS_FDS_TRACE_FILE_NAME = C:\hs_any.log
Contents of anywhere.dsn
[ODBC]
DRIVER=Adaptive Server Anywhere 6.0
UID=USERNAME
Integrated=No
AutoStop=Yes
EngineName=SERVICE
12. Test Database link
CREATE PUBLIC DATABASE LINK anywhere
CONNECT TO USERNAME IDENTIFIED BY SECRET
USING 'hs_any';
select * from anytable@anywhere;
In SYBASE ANYWHERE I've got this data
select * from anytable
go
dateini col1 col2
2002-02-01 00:00:00.0000 1.5000 1.4000
In ORACLE I've got
SQL> select * from anytable@anywhere;
dateini col1 col2
01/02/02 1 1
There isn't the decimal.
The reason doesn't like to be 1.4 or 1,4 because in Anywhere and in Oracle It is the same insert "insert into anytable values ('02/02/01', 1.5, 1.4)".
13. Now I try a select of one column
select col1 from anytable@anywhere;
this error occur :
ORA-00904 invalid column name
I am sure that this column exist ! "select * from anytable@anywhere;" and "select count(*) from anytable@anywhere;" are OK.
14. And this doesn't work anymore :
insert into bx_surcharge@anywhere values ('01/02/02',1,2);
ORA-02047: cannot join the distributed transaction in progress
15. Step 6 and 7 doesn't mean to be necessary ? And Where are used parameters of the "ODBC Connectivity Requirements" in the documentation. http://technet.oracle.com/doc/oracle8i_816/server.816/a76960/hs_genco.htm (And How to use Datatype Mapping ?)
So How to successful a ODBC connection (Maybe I forget some parameters) ? For me, using a connection with ODBC is generic and have to work fine with any type of datasource, isn't it ?
Have you got any idea to deal ? Thanks a lot.
Jobar Team