MDAC
Apr 6, 2001
Ive got a question on MDAC and SQL 2000.
We have a SQL Server 7.0 running on NT 4.0 with MDAC 2.1 installed.
We also have a SQL Server 2000 running on Windows 2000 with MDAC 2.6 installed, as well as other instances of 7.0 and 2000.
I am trying to setup Push replication from the box with SQL 7.0 and MDAC 2.1 installed to a 2000 server with MDAC 2.6.
A SQL 7 to 2000 push works if an instance of 7 and 2000 are installed on the same machine. I can push to any remote machine, except for the one server with MDAC 2.1 installed.
Could MDAC be my problem?
Thanks,
Kyle
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Feb 25, 2002
We are in the process to upgrading from SQL 7.0 SP1 on a NT 4 EE sp6a active/passive cluster to a SQL 2K SP2 on the same NT 4 EE sp6a active/passive (single instance I think it is called now) cluster.
My question now is about MDAC.
Do I need to upgrade all my clients (W98 SE) that actually have MDAC 2.5 installed to the 2.6 version of the product?
Is there any MS articles that clearly explain this argument?
Thank you in advance.
Best Regards.
Franco
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Jun 8, 2007
We have a large project that is importing msado21.tlb. We want to import least msado25.tlb to access the ADODB::_Stream object, but are unsure what exactly this entails. I've noticed no problems testing that change, but I cannot find any changelog for the MDAC upgrade. Is anyone aware of, or can point me to, a list of changes (fixes, modifications, caveats, etc) between MDAC 2.1 and MDAC 2.5? The binary msado file is always much newer, of course, but we want to link with the older type libraries to maintain maximum compatibility.
Any help is appreciated, I'm at a dead end!
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Aug 14, 2002
How to find out what version of MDAC is running on the server?
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Apr 3, 2001
Hello guys,
What is the use of MDAC and how to check the version of MDAC.
on any server.
Thank you.
Paul
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Sep 17, 2000
Hi folks. Got a real doozy going. One of the network techs reinstalled NT4 SP5 on a server. This reverted the SQL driver back to 2.something. Now sqlserveragent jobs will not run.
I have tried to instal MDAC 2.5, but it doesn't change the driver up to the new 3.xxx driver. I searched around on here and folks said that you have to move the MDAC executable to a new directory. for the new MDAC I don't see MDAC.EXE. I did find MDAC.COM and renamed that. Tried to rerun MDAC 2.5 but still got the old SQLSRV32.Dll.
Uninstalled SQLServer and reinstalled. still got the old SQLSRV32.Dll.
Tried to apply SQLServer SP1. It died.
Found that I am to shutdown some services. Did that. SP1 still dies.
Tried to apply SQLSERVER SP2. It tries to pick up where it died and it dies again.
SO, I'm currently uninstalling SQLServer, reboot, installing SQLServer, reboot, Trying SP2 again.
Didn't think that it was brain surgery just to install a new flippin version of the ODBC driver.. SHEEZ!!!!
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Dec 18, 2000
I'm in a mild-debate with some colleagues of mine.
Can someone shed some light on this for me.
(This is related to a problem we are having with empty recordsets being returned where we know there should be rows returned. I think it could be caused by incorrect/outdated MDAC components.)
We use SQL 7 sp2, and ado DSN'less connection strings.
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Dec 10, 2001
MSSQL .7.0 SP2
WIN2KPRO
ATI 32mb video
1.3gh AMD
1g Ram
No other apps are affected....my once fast system is slowed to a crawl. 5+gb
free on C 37gb on E and NO apps loaded in systray. NO background processes,
nunca.
I installed MDAC 2.6 on a system to try to correct an OLE error when using
sp_OACreate that causes an ODBC connection broken and shuts down SQL every
other execution.
***** Now, the system is running slow, I tried reinstalling, moving the data
to a single local drive. (No other apps appear to be slowed)
Uninstalled MDAC 2.6 and reverted to 2.5 still slow.
Reinstalling MSSQL 7 and SP2, and MDAC 2.5 still slow...
As an example, when a simple xp_cmdShell 'dir c:mssql7data*data.mdf' the
resulting 10 lines are slowing typed accross the screen. On most systems
the text is refreshed so fast we only see a flicker.
Cleaning the registry still slow... Profiler shows DML and GHost lines that
appear to suck the life out my system, but its only pegged at 2%, like it's
doing something, but what(?)
Tonight I may have to reformat and reload, however I've seen this before and
would really like a clue.
JeffP...
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Mar 11, 2004
We use mdac 2.7 on all servers and clients
We want to update servers to 2.8
Do we MUST update clints to 2.8 or they
can continue to run with 2.7
Thank you
Alex
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Aug 17, 2004
Can anyone please help?
How do I find out which MDAC version my pc is running on and how do I update to the latest version??
Thanks in advance!!!
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Apr 3, 2002
Hi everbody,
How can i found out which version of MDAC version running of my production box.
Regards
Fluvio
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Nov 2, 2001
What version of MDAC comes with SQL 2000?
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Oct 19, 2004
Hi,
I install MDAC 2.8 the installation is ok, i reboot and when i look in add/remove programs box there isn't mdac.
And my entreprise manager tools don't work properly.
It's very urgent please help me.
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Mar 22, 2004
i need to uninstall MDAC from my system. my operating system is windows2000 proffessional.
pls help me.... its very urgent.....
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Jan 2, 2008
Hi All
may be my post sounds stupid but i have on idea about it.
can some one there please clear what is relationship between MDAC and SQL Server. id MDAC part of SQL Server or it is optional tool for some thing else. what it is excatly and links to useful tutorial etc.
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Jan 22, 2002
How to check MDAC version.
What are the version supported for sql 7.0 cluster witn w2k sp1.
TIA
Paul
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May 22, 2002
I installed MDAC 2.6 SP1 on my 2000 machine in order to get SQL server 7.0 to work properly on my machine. I'm trying to get installed on server which is on NT 4.0 SP6 so that when I save a DTS package on my 2000 machine and run it on the server it doesn't get the error client access ODBC driver not capable. I intalled MDAC 2.6 SP1 on the server but it doesn't look like its updating it. The install goes fine. I reboot but when I go into the ODBC connections and look at the driver for the client acceess it still has version 6.00.00.05 while my 2000 machine says 6.00.07.00
Any ideas on why its not updating. Can I just take the DWBODBC.DLL from my machine and copy it to the server?
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Oct 3, 2001
While installing SQL 7.0 on nt4/sp6 it hangs during the MDAC portion.
The copying of files is succesfull but when it goes to the MDAC portion it hangs.
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Dec 19, 2000
Hi,
I have a SQL 7 Server running SP2/MDAC 2.5. One of my techs accidentally loaded mdac 2.6 on a machine and it no longer could establish ODBC connections to my SQL server. I used the CC check utility to roll it back, but was wondering why the 2.6 client could no longer attach to my server. In the past I have had 2.1 on my server with 2.5 clients that connected with very few problems. At least not a major one like a failing ODBC connection. Do I need to upgrade my server to 2.6 before my clients?
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Oct 14, 2004
i was wondering if there is anyway to downgrade the MDAC to 2.5 (or specicifically the sqlsrv32.dll to 3.70.06.23) on an XP machine?
WHY? - http://www.dbforums.com/t1043791.html
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Jan 15, 2004
it seems that starting with MDAC 2.8 the FETCH NEXT statement for cursors requires an INTO clause. otherwise an unspecified error is returned.
so it's not possible to scroll through the records anymore without storing the values of the fields into local variables?
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Mar 2, 2004
Hi all,
About to start a project to upgrade to MDAC 2.8 from MDAC 2.6 on a number of servers. Has anyone encountered any issues with this? Also, if we do NOT upgrade several client workstations, might we expect problems as a result?
We are aware that we need to patch MDAC for the vulnerability issues, but we are trying to comine this with a server upgrade for servers at risk. Has anyone had experience on a similar project?
Cheers,
Dun
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Nov 30, 2006
I am trying to load a project under VS2005 under Windows Vista that references an ADOX wrapper that is looking for version 2.8.0.0. The reference fails because the library is not registered.
I thought maybe installing MDAC 2.8 would solve my problems, but when I run the installer for that, it briefly puts up a dialog that it is extracting files, then it disappears.
Any ideas?
--Bruce
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Jul 27, 2007
What kind of components does MDAC 2.8 SP1 give you for Visual Studio 2005? Thanks!
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Mar 14, 2006
Hi, I have troubles with a threaded application on W2003 server. It seems to leave open connections behind time to time, it sums to hundreds over a day (the application make thousends). It is using the SQL ADO provider, MDAC 2.82.1830.0, SQL Server 8.00.2039 (SP4), Windows 5.2 (3790).
Is there a knwon bug like this? Is there a way to trace the ADO provider?
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Feb 3, 1999
This question relates to the optional installation component MDAC which upgrades the version of the ODBC driver you use.
Microsoft has indicated that any ODBC driver BELOW 2.5 has not been tested and is not year 2000 compliant. Anything between 2.5 and 3.0 they are testing and is not certified. 3.0 and above is compliant.
However, the NT 4.0 Fix pack #4 installs version 3.60.0319 and the SQL server Fix pack 5 and 5a install 3.70. something.
Most of my Production servers and clients have 2.65. something.
How are people handling this issue to ensure year 2000 compliance?
We already have one vendor's software who is warning us NOT to install this component because their software will not work.
I would like to use the most current version possible.
Any input would be appreciated........Craig
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May 14, 2004
I am new to MS SQL 2000 and have a couple of questions. First, how do you check the version of MDAC that Windows 2003 server is running and second, how do you determine what service pack that SQL is at.
I am having issues of extreme slowness using ODBC. I checked to see that tracing was not enabled and found that it wasn't. I am using TCP/IP for the connection.
Thanks
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Aug 14, 2007
Hi Friends,
I have a system with windows 2000 advanced server SP4 OS. In that system, How can i upgrade MDAC version from 2.5 to 2.8 sp2.
This is use of,
I am going to install sql server 2005 express edition advanced services SP2.
Please help me, how can i upgrade higher version of MDAC?
Thanks in Advance
Rameshkumar Thirumalaisamy
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Feb 3, 2008
I am running SQLServer 2005 on Windows XP sp2.
I can't build a data connection in BIDS (error 80040154), and I checked the internet for possible solutions.
I downloaded Microsoft Component Checker and it informed me that I had a mismatch with MDAC 2.8 SP1 and XP SP2.
Specifically SQLOLEDB.dll (expected 2000.85.1117.0) and MSXML3.dll (expected 8.50.2162.0) and SQLXMLX.rll (expected 2000.85.1117.0) seem to be mismatched.
There are all kinds of instructions on the web for various fixes, and I am not certain what is current.
What do I need to load/uninstall in order to fix this problem?
Thanks very much...Marv
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May 2, 2006
I just updated MDAC on one of my machines and I'm now having trouble accessing my SQL server. It's a local connection using SQLOLEDB in a VB dll. It was working fine before the update and now I get:
Microsoft OLE DB Provider for SQL Server error '80004005'
[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
/cms25/CMS.asp, line 33
Most of the information I can find on this refers to TCP/IP connections but the SQL server is local. My connect function looks like this:
Public Sub ADOConnect()
With m_ADOConnection
.Provider = "SQLOLEDB"
.CursorLocation = adOpenStatic
.CommandTimeout = 20
.Mode = adModeReadWrite
.ConnectionString = "Data Source=" & m_strServer & ";Database=" & m_strName & ";" & m_strUsernamePassword
.open
End With
End Sub
On this server, m_strServer = "(local)". What am I missing? Thanks for any help in advance!
a.
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Jun 18, 2007
HelloI have a VB6 application using classic ado (MDAC 2.8) for connectingms sql 2000 server. Application uses a lot of server side cursors. NowI want to switch to ms sql 2005 server but I have noticed very seriousperformance problem. Sql profiler results of execution of followingcommands:declare @p1 intset @p1=180150131declare @p3 intset @p3=1declare @p4 intset @p4=16388declare @p5 intset @p5=22221exec sp_cursoropen @p1 output,N' Select ... from ... where .... orderby ...',@p3 output,@p4 output,@p5 outputselect @p1, @p3, @p4, @p5on sql server 2000:CPU: 234Reads:82515Writes:136Duration:296and on sql server 2005:CPU: 4703Reads:678751Writes:1Duration:4867Both databases are identical, the servers runs on the same machine(Pentium 2,8 Ghz, 2 GB RAM) with only one client connected. On forumsI've read that Microsoft doesn't recommend using server side cursorson sql 2005 but is there any way to increase performance to someacceptable level?thanks in advanceszymon strus
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Jul 20, 2005
Can anyone give me some sugguestions here.Connection is declared at the start of the applicationSet rsFZReport.ActiveConnection = connThen a function repeatly opens recordsets like this -rsFZReport.Open sRS, , adOpenStatic, adLockReadOnly, adCmdText....reporting code etc...If rsFZReport.State > 0 ThenrsFZReport.CloseSet rsFZReport= NothingendifUsing VB Watch debugger, the close and set nothing do NOT release anymemory. It just keeps increasing. The application connects to multipledatabases and many tables, so its uses about 10Mb/minute.(I don't think its of relavance but Form.show uses memory but form.unloaddoesn't release any back)I've installed SP3a and MDAC 2.8 to no avail. Anyone have any ideas or knowwhat I can do?msado27.tlb 2.80.1022.0MSSQL Server SP3a (3 has a memory leak apparently)VB6, SP6Sqlsrv32.dll caused a leak on NT4 SP6, but upgrading it on my win2k SP4server/workstation (they are both and the same) to thisSqlsrv32.dll 2000.85.1022.0doesn't help.Provider=SQLOLEDB;Data Source=theServer;Initial Catalog=theDB;UserID=uid;Password=thepwd;OPTION=3;connect timeout=240;
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