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Posted on 2002-06-25
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Last Modified: 2012-08-14
When I connect visual basic to oracle I got an error

      First I use DAO(Data Access Object) then error is:
               RunTime error '40002';
               IM002:[Microsoft][ODBC Driver manager]Data Source name not found and no default driver specified.

      Next I Use ADO then error is:
               Object Variable or With block variable not set.
EX:
   Dim conn As ADODB.Connection
   Dim rs As Recordset
   conn.Open "...", "...", "..."
            ^DSN   ^User  ^Password
   Set rs = conn.Execute("SELECT * FROM  theTable")

In below I don't know which path i give.

conn.open"HERE WHICH PATH I GIVE"," ", " "

   I GIVE IN THIS WAY:
   conn.Open "C:\Program Files\Common Files\ODBC\Data Sources\vij.dsn", "scott", "tiger"

                                     OR
   conn.Open "vij.dsn", "scott", "tiger"

But error is same.
Please suggest me answer.

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Question by:vijay_bp
5 Comments
 
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Expert Comment

by:rpai
ID: 7107619
How is that you have created your dsn?

Follow these steps on your computer to add a new System DSN or check the name of an existing data source :-
1. Double-click the ODBC Data Source icon in the Control Panel.
2. In the Data Sources dialog box, click System DSN.
3. Click Add if you do not see the name of the System DSN you used.
4. If creating a new one, Select the driver as 'Microsoft ODBC for Oracle' and click Finish. Now add all the parameters.
5. Once you dsn is created right, you should be able to execute the above lines of code.

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Expert Comment

by:TimCottee
ID: 7107660
conn.Open "C:\Program Files\Common Files\ODBC\Data Sources\vij.dsn;UID=scott;Pwd=tiger"

Try this instead.

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Accepted Solution

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PNJ earned 45 total points
ID: 7107667
You need to check that you have got a service set up in the Oracle bits and pieces. Depending on which version of Oracle depends on what it's called. If you're using Net8 then use "Oracle Net 8 Easy Config" and set up a service that points to the listener on the database. (It's a similar name on V7, but I can't remember exactly what it's called). Call the service "TestServer" for this example.

and then

   Dim gadoConnect as ADODB.Connection
   Dim Connect     as String
...
   Set gadoConnect = New ADODB.Connection
   Connect = "ConnectString=TestServer;UID=uname;PWD=upass;Driver={Microsoft ODBC Driver for Oracle}"

   gadoConnect.ConnectionString = Connect
   gadoConnect.open , , , adConnectUnspecified

This is for a DSNless connection
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Expert Comment

by:DanRollins
ID: 7963024
Hi vijay_bp,
It appears that you have forgotten this question. I will ask Community Support to close it unless you finalize it within 7 days. I will ask a Community Support Moderator to:

    Accept PNJ's comment(s) as an answer.

vijay_bp, if you think your question was not answered at all or if you need help, just post a new comment here; Community Support will help you.  DO NOT accept this comment as an answer.

EXPERTS: If you disagree with that recommendation, please post an explanatory comment.
==========
DanRollins -- EE database cleanup volunteer
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Expert Comment

by:Netminder
ID: 8039081
Per recommendation, force-accepted.

Netminder
EE Admin
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