Improve company productivity with a Business Account.Sign Up

x
?
Solved

Error: more than one hdbc connection in use

Posted on 1999-01-12
5
Medium Priority
?
535 Views
Last Modified: 2013-12-25
When I try to do a "BeginTrans" for a Connection
(f.e. frmMain.gcnProgramManagement.BeginTrans)
I get the always following error:
Can not start transaction because more than one hdbc connection in use.
Error Nr.: -2147168227 / 8004d01d

What's the problem and how can i fix it?
0
Comment
Question by:gautschi
  • 3
  • 2
5 Comments
 
LVL 3

Accepted Solution

by:
cognition earned 600 total points
ID: 1498951
I am guessing you are using rdo.

You have another transaction open, or the connection still has not finished processing the last command.

For example if you return a resultset, and loop through it, but stop half way, and then try and issue another command you will get this error.

This especially happens, if you start using asynchronous cursors, and start one query, and then try another. To do two queries at the same time you will need two connections.

You either need to ensure that you pull all the data back, or set the resultset to nothing. You can also try using a different cursor type/driver. Forward Only, ReadOnly.


0
 

Author Comment

by:gautschi
ID: 1498952
I'm using ADO. and as far as i know i have just one recordset open. i can't use a ReadOnly cursor, because i have to update the recordset.

I wanna do sth like that
conn.BeginTrans
  rs.Update
conn.CommitTrans

If it would help you I can send you an example code.
0
 
LVL 3

Expert Comment

by:cognition
ID: 1498953
When you open the recordset, do you return all the rows you are going to operate on, before you start updating?

Are you returning multiple rows ?
Can you send a bit more code, that recreates the error ?
0
 

Author Comment

by:gautschi
ID: 1498954
Sorry - you were right - I had still a recordset open that wasn't closed :( anyway, thanks for your help! (btw: why can't I have 2 recordsets open and do a BeginTrans, at the same time?)
0
 
LVL 3

Expert Comment

by:cognition
ID: 1498955
Becasue the first recordset is still using the connection to retrieve data.

You can have multiple recordsets open, just not retrieve the data for them at the same time.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
Enums (shorthand for ‘enumerations’) are not often used by programmers but they can be quite valuable when they are.  What are they? An Enum is just a type of variable like a string or an Integer, but in this case one that you create that contains…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

607 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question