We help IT Professionals succeed at work.

ADODB Connection to Excel fails to read data for second (read-only) user

1,552 Views
Last Modified: 2014-01-13
I have an Excel workbook with a user defined function to retrieve data from closed workbooks using ADODB. The function works for the first user that opens the main workbook, however when a second user opens the file, accepting the message that the workbook can only be opened Read-only, the retrieve function fails. The connection object is established correctly but the SQL to retrieve the recordset fails.

Windows 7
Main workbook native Excel 2010
Source workbook - 97-2003

Connection string as follows:
Provider=Microsoft.ACE.OLEDB.12.0;
User ID=Admin;
Data Source=U:\Clients\********\Dec 2013\ReadOnlyCrashInvestigation8Jan2014\***.xls;
Mode=Share Deny None;
Jet OLEDB:System database="";
Jet OLEDB:Registry Path="";
Jet OLEDB:Database Password="";
Jet OLEDB:Engine Type=35;
Jet OLEDB:Database Locking Mode=0;
Jet OLEDB:Global Partial Bulk Ops=2;
Jet OLEDB:Global Bulk Transactions=1;
Jet OLEDB:New Database Password="";
Jet OLEDB:Create System Database=False;
Jet OLEDB:Encrypt Database=False;
Jet OLEDB:Don't Copy Locale on Compact=False;
Jet OLEDB:Compact Without Replica Repair=False;
Jet OLEDB:SFP=False;
Jet OLEDB:Support Complex Data=False;
Jet OLEDB:Bypass UserInfo Validation=False;

SQL is simple "Select * FROM [SHEETNAME$Range]"

Any pointers would be greatly appreciated.

Attaching file will require a lot of anonymising.
Comment
Watch Question

CERTIFIED EXPERT
Top Expert 2015

Commented:
ADODB need to open the file to retrieve the data, and by default, ADODB needs to keep the connection as long as the recordset is alive, meaning that the file stays opened.

Just as happens when a user opens the file in Excel, is then shows up as ReadOnly for anybody who tries to open again it a second time.

If the Recordset is use only to get the data with no interaction with it afterward, get rid of it as soon as you have the data.

Otherwise, lookup "disconnected recordsets" on the web to know how to work with a recordset without keeping the connection opened.
CERTIFIED EXPERT
Commented:
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION

Author

Commented:
Many thanks to ProdOps - worked a treat.
In a previous version, it didn't seem to matter that the Mode was set to Share Deny None but in the current Workbook, setting it to "Read" did the trick. We had been tidying up the connection and recordset objects.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.