MS ODBC or Oracle ODBC driver?

Can anyone tell me which is the correct driver to use when developing front end MS Access 2003 to retrieve and update data on a Open VMS platform with Oracle 8.1.7.3 database?
I have serval Access 2000 databases that run on most WinNT or W2K clients with a couple of W2K Dell exceptions. These Access 2000 db's connect to the Oracle database using linked tables and SQL pass-through queries that work with ODBC Manager-DNS system setup using the Microsoft for Oracle ODBC driver.
Now we are upgrading to Office Pro 2003 so new W2K images have been setup with Oracle 8.1.7 Client. SQL*Plus works on these clients but when I create the System DNS the Access databases return an error "ODBC connection failed". I can however connect with a pass-through query using Oracle's ODBC driver. Not enough time in roll-out plan to change the ODBC connection string in hundreds of Access SPT queries.
Please help!
Bonnie

if you still need assistance reagarding this...email me directly..
shah
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ODBC Error Oracle Merant Driver 32

Hi,
OS-windows server 2008 64bit
Oracle Database 11g-64 bit
Oracle Merant Driver 32 is installed(SysWOW64) when install DAC. so can't connect using Oracle merant driver 32 with Oracle Database 64bit. it's showing the below error.
How can connect Oracle Merant Driver 32 bit with Oracle database 64 bit. kindly check how to resolve this.
Error:
Specified driver could not be loaded due to system error 193:
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Thanks

you can use the oracle drivers too like oracle in OraClient11g_home1 driver to create the dwh tables
or else http://www.exactsoftware.com/docs/DocView.aspx?DocumentID=%7Ba99551aa-6eae-475c-9567-787f9975d93b%7D
mark if it helps

Oracle ODBC and DAO extremely slow

Hi
I'm using Microsoft DAO 3.6 with an Oracle ODBC connection (version 9.2) in an VB6 application.
Opening an updateable dynaset is extremely slow, I have measured the performance with Oracle ODBC, Microsoft Oracle ODBC and Microsoft SQL-Server ODBC as follows:
Oracle ODBC: 1952 ms
MS Oracle ODBC: 360 ms
MS SQL-Server ODBC: 40 ms (connection to a MS SQL-Server)
If I use the SQLpassthrough option the result is about 10 ms in all 3 cases, but the dynaset is readonly !
The testing program is as follows:
Option Explicit
Private Declare Function timeGetTime Lib "winmm.dll" () As Long
Private Sub Form_Load()
Dim wsdata As DAO.Workspace
Dim db As DAO.Database
Dim dbconn As String
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Dim start As Long
dbconn = "ODBC;DSN=AdhocitORA;UID=adhocit;PWD=adhocit;"
Set wsdata = DBEngine.Workspaces(0)
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rs.MoveLast
rs.MoveFirst
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Is there any setting in the Oracle ODBC, that need to be adjusted ??
Erling

Why are you doing a moveLast followed by a moveFirst? That's going to force Oracle to retrieve all the records in the recordset. If there are a lot of records, you'll probably see a benefit if you increase the prefetch in the Oracle ODBC DSN configuration.
Justin

Problem with Oracle ODBC Driver on Windows 7

Hi,
Please help with this problem I have with a Windows 7 machine. I have installed Oracle Client 11g on my Windows 7 machine but when I want to create an ODBC Data Source, I cant find any driver for oracle. How can I resolve this issue? I need the data source for an application to work and I cant figure out what is happening. Someone please help!

There's a dedicated Oracle ODBC forum:
ODBC
As this forum deals with connections from Oracle to foreign data stores it would be better to close this thread and post it again in the ODBC forum.

Oracle ODBC - Internal Error - unable to initialize NLS during driver load

I'm having some trouble with my ODBC connections which I hope someone can please help me with!
About 6 weeks ago all was working as normal.
As far as I know there have been no updates to the ORacle DB, the Windows XP operating system or the ODBC Drivers.
Today when I opened access and visual case 2 to connect to Oracle I was at first greeted with a:
unable to connect SQLState=IM004 SQL_HANDLE_ENV
error. ODBC also kept crashing.
I restarted the computer and was confronted with a different error:
odbc SQLSTate 08004 ORA 12154 TNS could not resolve the connect identifier specified
I was able to fix this error by setting the environment variable TNS_ADMIN in windows xp environment variables. I'm extremely confused about how this happened though as it was working and I don't think anything has changed.
I was then able to connect to the database via Microsoft Access but when I opened Visual Case 2 and tried to make an update, I was confronted with the following error:
Oracle ODBC Driver - internal error - unable to initialize NLS during driver load
I looked in the registry at:
HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\KEY_OraClient10g_home1
HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\KEY_OraClient10g_home2
HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\KEY_OraDb10g_home1
and NLS_LANG was set to "AMERICAN_AMERICA.WE8MSWIN1252" in all 3 places.
(Though KEY_OraClient10g_home2 only had 4 entries as opposed to KEY_OraClient10g_home1's 13 entries)...
Since I made those changes I can no longer connect through Access.
I just receive a ODBC - connection to 'xxx' failed
Advice greatly appreciated!!!!
Edited by: user11150264 on Aug 25, 2009 10:21 PM

Actually it sort of does...
I switched the ODBC connection to use instant client and now it's all working again.
The biggest mystery is what changed to make it suddenly stop working the old way...

Reg : I am getting an error while Using MicroSoft ODBC For Oracle Driver

I am Using MicroSoft ODBC For Oracle Driver for JDBC. Why i am using this driver is i could not able to get the arabic content if i use the other driver .I Right now i cannot change the NLS Lang because its a production server also it has around 300 gb of data and i can not take risk now by changing the NLS lang.. coming to the below error .i could able to access my data up to 4 Hours after that i am getting this error.If i restart my tomcat i can use my application one more 4 hrs .Please get back to me if u have any solution.Its very very helpful to me......+*
[java.sql.SQLException] [ Microsoft ODBC for Oracle ]
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6957)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7114)
at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3073)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:3
23)
at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:174)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at com.iton.eoffice.DatabaseBean.connecteOfficeMoEnq(DatabaseBean.java:4
60)
at org.apache.jsp.MhewProfilesearchMoEnq_jsp._jspService(MhewProfilesear
chMoEnq_jsp.java:434)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
20)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at com.iton.eoffice.tree.CharacterEncodingFilter.doFilter(CharacterEncod
ingFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.j
ava:347)
at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBin
derValve.java:209)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:212)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
5)
at java.lang.Thread.run(Thread.java:619)
------------1234-----------
java.lang.NullPointerException
at com.iton.eoffice.DatabaseBean.getSQLRows(DatabaseBean.java:764)
at org.apache.jsp.MhewProfilesearchMoEnq_jsp._jspService(MhewProfilesear
chMoEnq_jsp.java:435)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
20)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at com.iton.eoffice.tree.CharacterEncodingFilter.doFilter(CharacterEncod
ingFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl

<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by sreenivas navuluri:
Oracle(tm)Client and networking components not found. These components are supplied by Oracle Corporation and part of Oracle Version 7.2 or greater Client software installation. You will be unable to use this driver until these components have been installed . This error occurs while selecting the Microsoft Odbc for Oracle driver from the ODBC in control panel. Pls suggest<HR></BLOCKQUOTE>
null

Error in connecting oracle odbc driver 9.1.0.8

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Oracle RDB Driver fails with JDBC/ODBC Bridge

Has anyone experienced problems using the latest Oracle RDB
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successfully on NT, but it is not supported on W2K. The new
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This forum is for general suggestions and feedback about the OTN
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select the appropriate discussion forum in our 'Discussions'
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Best regards, OTN Team

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Hi all,
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i had downloaded from here http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
under 64-bit Oracle 10g Release 2 ODAC 10.2.0.3 for Windows x64 why ODAC 10.2.0.3? (it doesnt include ODBC driver according to the homepage)
download instant client (50 MB) + ODBC option (1,5MB) from:
http://www.oracle.com/technetwork/topics/winx64soft-089540.html
extract to same directory, run odbc_install.exe to register the driver, and its done
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I am using oracle gateway (11.1) for sqlserver on Linux platform with Oracle Server 10g.
I am getting following error when i run any select query:
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Another thing is, i have created a ODBC DSN named as "sqlserver" as well. This configuration works fine when "program" parameter is set to dg4odbc in Listener.ora. But with dg4msql, it gives error.
Followings are the configuration files:
initsqlserver.ora
# HS init parameters
HS_FDS_CONNECT_INFO=database_machine:1433//test_master
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
listener.ora
SID_LIST_sqlserver =
(SID_LIST =
(SID_DESC =
(SID_NAME = sqlserver)
(ORACLE_HOME = /u01/app/oracle/product/11.1.0.6.0/gateway)
(PROGRAM = dg4msql)
sqlserver =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Server_Machine )(PORT = 1522))
(ADDRESS = (PROTOCOL = IPC)(KEY = PNPKEY))
tnsnames.ora
SQLSERVER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Server_Machine)(PORT = 1522))
(CONNECT_DATA =
(SID = sqlserver)
(HS = OK)
)

Hi,
The error you get is because your HS_FDS_CONNECT_STRING is not correct:
Be sure you can ping the SQL SERVER name from the Oracle Server,or use TCP/IP address
Check the port, it is not necessary 1433.
You can use the instance name insted of port:
HS_FDS_CONNECT_STRING=server_ip_address/instance_name/database_name
Be careful, in the LISTENER.ORA, you must specify the Gateway machine and not the SQL SERVER machine:
sqlserver =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Gateway_Machine )(PORT = 1522)) <====you must specify Oracle Gateway machine
(ADDRESS = (PROTOCOL = IPC)(KEY = PNPKEY))
Idem for TNSNAMES.ORA:
SQLSERVER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Gateway_Machine)(PORT = 1522))
(CONNECT_DATA =
(SID = sqlserver)
(HS = OK)
Regards
Mireille

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I tried to insert into CLOB using the latest Oracle ODBC driver 9.02.00.65 and it fails. But the same works with earlier versions of ODBC driver earlier to 9.02.00.65 ie., 9.02.00.63.
Here is the code snippet I tried. Any help now is highly appreciated as I am in the crunch time.
I tried the same code snippet with VARCHAR2 column with the same driver and it works.
** CONVDSN.C - This is the ODBC sample code for
** creating File DSN pointers to machine DSNs.
**This code is furnished on an as-is basis as part of the ODBC SDK and is
**intended for example purposes only.
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <sql.h>
#include <sqlext.h>
#include <odbcinst.h>
#include <sqltypes.h>
#define MAXDATALEN 25 //maximum data length per column
#define MAX_COL 15 //maximum column in result set
#define MAX_ROW 100 //maximum number of rows
#define MAXBUFLEN 256
#define SQLERR_FORMAT "SQL Error State:%s, Native Error Code: %lX, ODBC Error: %s"
#define MAXDISPLAYSIZE MAX_COL*(MAXDATALEN+1)
#define SQLWRNMSGTITLE "SQL_SUCCESS_WITH_INFO results"
#define SQLERRCNTDTITLE "SQL_ERROR results continued"
#define SQLWRNMSGTITLE "SQL_SUCCESS_WITH_INFO results"
#define SQLWRNCNTDTITLE "SQL_SUCCESS_WITH_INFO results continued"
#define NULLDATASTRING "SQL_NULL_DATA"
#define SQLERRMSGTITLE "SQL_ERROR results"
// prototypes
void ExpandFileName(LPSTR szFileDSNName, LPCSTR szDSNName);
void MakeLegalName(LPSTR szLegalDSNName, LPCSTR szDSNName);
// main routine: Iterate through the user and system DSNs, creating a pointer
// to each.
void FAR PASCAL DisplayError(SQLRETURN nResult, HWND hWnd, SWORD fHandleType, SQLHANDLE handle);
void insertSelectClob();
void checkRcCode(RETCODE rc);
int main (int argc, char* argv[])
     insertSelectClob();
return 0;
void FAR PASCAL DisplayError(SQLRETURN nResult, HWND hWnd, SWORD fHandleType, SQLHANDLE handle)
     UCHAR szErrState[SQL_SQLSTATE_SIZE+1]; // SQL Error State string
     UCHAR szErrText[SQL_MAX_MESSAGE_LENGTH+1]; // SQL Error Text string
     char szBuffer[SQL_SQLSTATE_SIZE+SQL_MAX_MESSAGE_LENGTH+MAXBUFLEN+1];
     // formatted Error text Buffer
     SWORD wErrMsgLen; // Error message length
     UDWORD dwErrCode; // Native Error code
     int iSize; // Display Error Text size
     SQLRETURN nErrResult; // Return Code from SQLGetDiagRec
     SWORD sMsgNum = 1;
     SWORD fFirstRun = TRUE;
     char szDispBuffer[MAXDISPLAYSIZE+1]; // Display Buffer
     szBuffer[0] = '\0';
     do
          // continue to bring messageboxes till all errors are displayed.
          // more than one message box may be reqd. as err text has fixed
          // string size.
          // initialize display buffer with the string in error text buffer
          strcpy(szDispBuffer, szBuffer);
          // call SQLGetDiagRec function with proper ODBC handles, repeatedly until
          // function returns SQL_NO_DATA. Concatenate all error strings
          // in the display buffer and display all results.
          while ((nErrResult = SQLGetDiagRec(fHandleType, handle, sMsgNum++,
               szErrState, &dwErrCode, szErrText,
               SQL_MAX_MESSAGE_LENGTH-1, &wErrMsgLen)) != SQL_NO_DATA)
               if(nErrResult == SQL_ERROR || nErrResult == SQL_INVALID_HANDLE)
               break;
               wsprintf(szBuffer, SQLERR_FORMAT, (LPSTR)szErrState, dwErrCode, (LPSTR)szErrText);
               iSize = strlen(szDispBuffer);
               if (iSize && (iSize+strlen(szBuffer)+1) >= MAXDISPLAYSIZE)
               break;
               if (iSize)
               strcat(szDispBuffer, "\n");
               strcat(szDispBuffer, szBuffer);
          // display proper ERROR or WARNING message with proper title
          if (nResult == SQL_SUCCESS_WITH_INFO)
               MessageBox(hWnd, szDispBuffer, (fFirstRun? SQLWRNMSGTITLE : SQLWRNCNTDTITLE),
               MB_OK | MB_ICONINFORMATION);
          else
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               MB_OK | MB_ICONEXCLAMATION);
          if (fFirstRun)
               fFirstRun = FALSE;
     while (!(nErrResult == SQL_NO_DATA || nErrResult == SQL_ERROR || nErrResult == SQL_INVALID_HANDLE));
void insertSelectClob()
SQLCHAR clobdata[1001];
SQLCHAR resultdata[1001];
SQLINTEGER ind = SQL_DATA_AT_EXEC;
SQLCHAR *bufp;
     SQLINTEGER cbOrderID = sizeof(SQLSMALLINT);
     SQLSMALLINT sTmp=13;
     SQLCHAR *sqlStmt1 = _T("INSERT INTO clobtbl(id, clob1) VALUES(?, ?)");
     SQLCHAR *sqlStmt2 = _T("SELECT id, clob1 FROM clobtbl");
//     SQLCHAR *sqlStmt1 = _T("INSERT INTO testInsert(id, clob1) VALUES(?, ?)");
// SQLCHAR *sqlStmt2 = _T("SELECT id, clob1 FROM testInsert");
int clobdatalen, chunksize, dtsize, retchklen;
     HENV envHnd;
HDBC conHnd;
HSTMT stmtHnd;
RETCODE rc;
     int nRowcnt=0;
     SQLPOINTER pToken = NULL;
rc = SQL_SUCCESS;
// ENV is allocated
rc = SQLAllocEnv(&envHnd);
// Connection Handle is allocated
rc = SQLAllocConnect(envHnd, &conHnd);
rc = SQLConnect(conHnd, T("testd734"), SQLNTS, T("ipathdba"), SQLNTS, T("ipathdba"), SQLNTS);
printf(_T("Insert CLOB1 using SQLPutData...\n[%s]\n"), sqlStmt1);
// Set CLOB Data
int i;
SQLCHAR ch;
for (i=0, ch=_T('A'); i< sizeof(clobdata)/sizeof(SQLCHAR); ++i, ++ch)
if (ch > _T('Z'))
ch = _T('A');
clobdata[i] = ch;
clobdata[sizeof(clobdata)/sizeof(SQLCHAR)-1] = _T('\0');
clobdatalen = lstrlen(clobdata); // length of characters
chunksize = clobdatalen / 7; // 7 times to put
     rc = SQLAllocHandle(SQL_HANDLE_STMT, conHnd, &stmtHnd);
// Step 1: Prepare
rc = SQLPrepare(stmtHnd, sqlStmt1, SQL_NTS);
// checkSQLErr(envHnd, conHnd, stmtHnd, rc);
// Step 2: Bind Parameter with SQL_DATA_AT_EXEC
rc = SQLBindParameter(stmtHnd,
1,
SQL_PARAM_INPUT,
SQL_C_SSHORT,
SQL_INTEGER,
0,
0,
&sTmp,
0,
&cbOrderID);
rc = SQLBindParameter(stmtHnd,
2,
SQL_PARAM_INPUT,
SQL_C_CHAR,
SQL_LONGVARCHAR,
clobdatalen*sizeof(CHAR),
0,
(SQLPOINTER)clobdata,
clobdatalen*sizeof(CHAR),
&ind);
// checkSQLErr(envHnd, conHnd, stmtHnd, rc);
// Step 3: Execute
rc = SQLExecute(stmtHnd);
     while (rc == SQL_NEED_DATA) {
          rc = SQLParamData(stmtHnd, &pToken);
          if (rc == SQL_NEED_DATA) {
               for (dtsize=0, bufp = clobdata;
                    dtsize < clobdatalen;
                    dtsize += chunksize, bufp += chunksize)
               int len;
               if (dtsize+chunksize < clobdatalen)
                    len = chunksize;
                    rc = SQLPutData(stmtHnd, bufp, len*sizeof(SQLCHAR));
               else
                    len = clobdatalen-dtsize;
                    rc = SQLPutData(stmtHnd, bufp, SQL_NTS);
          rc = SQLParamData(stmtHnd, &pToken);
// Fails as row count retrieved is zero.
     rc = SQLRowCount(stmtHnd, &nRowcnt);
     if(rc != SQL_SUCCESS)
          DisplayError(rc, NULL, SQL_HANDLE_ENV, conHnd);
rc = SQLFreeStmt(stmtHnd, SQL_CLOSE);
printf(_T("Finished Update\n\n"));
rc = SQLAllocStmt(conHnd, &stmtHnd);
if (rc != SQL_SUCCESS)
printf(_T("Failed to allocate STMT\n"));
exit(-1);
// Clear Result Data
memset(resultdata, 0, sizeof(resultdata));
chunksize = clobdatalen / 15; // 15 times to gut
rc = SQLExecDirect(stmtHnd, sqlStmt2, SQL_NTS); // select
     if(rc != SQL_SUCCESS)
          DisplayError(rc, NULL, SQL_HANDLE_ENV, conHnd);
// Step 2: Fetch
rc = SQLFetch(stmtHnd);
for(dtsize=0, bufp = resultdata;
dtsize > sizeof(resultdata)/sizeof(CHAR) && rc != SQL_NO_DATA;
dtsize += chunksize-1, bufp += chunksize-1)
int len; // len should contain the space for NULL termination
if (dtsize+chunksize<sizeof(resultdata)/sizeof(CHAR))
len = chunksize;
else
len = sizeof(resultdata)/sizeof(CHAR)-dtsize;
// Step 3: GetData
rc = SQLGetData(stmtHnd,
2,
SQL_C_CHAR,
(SQLPOINTER)bufp,
len*sizeof(CHAR),
&retchklen);
if (!_tcscmp(resultdata, clobdata))
printf(_T("Succeeded!!\n\n"));
else
printf(_T("Failed!!\n\n"));
     if (conHnd)
          SQLFreeConnect(conHnd);
     if (envHnd)
          SQLFreeEnv(envHnd);
}

Hi,
Since 9.2 has been desupported for error correction you will not be able to download that version from OTN. You should ask whoever is providing the training if their is an alternate version you can use. The only versions that you will be able to download from oracle.com is 10.2 11.1, and 11.2.

How to select active Oracle ODBC Driver programmatically?

Hi,
My application creates ODBC DSN to connect with Oracle 10g database server. I need to find out Oracle Driver installed on the system programmatically. I am trying to read KEY_<PRODUCT NUMBER> registry key and eventually searching ORACLE_HOME value. This helps me in searching Oracle Driver in ODBCINST.INI registry key. (Oracle in OraDb10g_home1)
If multiple Oracle clients are installed on the same system, multiple KEY_<PRODUCT NUMBER> registry keys and oracle drivers would be available. I am not sure which and how to select the current active oracle driver.
Oracle in OraDb10g_home1
Oracle in OraDb10g_home2
Can anybody help me out? Can I use inventory file (inventory.xml) to determince current active home directory? Reading PATH environment variable to identity active home directory would be tedious.

Please look at following thread for answer.
How to select active Oracle ODBC Driver programmatically?

Oracle ODBC Driver 8.1.7.8b causing MFC OpenEx() delay

Hi:
I have installed the Oracle ODBC Driver version 8.1.7.8b on a WINNT 4.0 Workstation with SP6a. I have an MFC test app with the following code:
PostStatus(ERROR_NOERROR, APP_NAME, "Calling OpenEx()");
CDatabase db;
if(db.OpenEx(_T("DSN=MYTESTDSN;UID=USERID;PWD=PASSWORD"), CDatabase::openReadOnly|CDatabase::noOdbcDialog))
     PostStatus(ERROR_NOERROR, APP_NAME, "OpenEx() success,calling Close()");
     db.Close();
} // OpenEx()
else // OpenEx() error
     PostStatus(ERROR_MODERATE, APP_NAME, "Error opening database,OpenEx() failed!");
The above OpenEx call is taking upto 3 seconds to return. When I use Microsoft Oracle ODBC driver, it takes less than 0.5 sec to connect/disconnect.
Any idea why OpenEx() is taking that long? I've compiled this using VC++ 6.0 SP5, on a WIN2K and WINNT system but I get the same result.
Thanks,
Amit.

This forum is for feedback about the OTN program and problems with OTN accounts. Technical questions cannot be answered here. Please post your question in the appropriate product or technology forum. http://forums.oracle.com/forums/index.jsp?cat=48

Installing the Oracle ODBC driver

Is there any way to wrap only the oracle odbc driver in an
install program?
we want to avoid having to go through an entire oracle client
install.
Any help would be much apprecitaed.
null

Radha (guest) wrote:
: Is there any way to wrap only the oracle odbc driver in an
: install program?
: we want to avoid having to go through an entire oracle client
: install.
: Any help would be much apprecitaed.
I have the same question. The universal installer is too
complicated for simple client application connectivity
installation.
null

MS ODBC or Oracle ODBC driver?

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