Access Database Engine 2007 Download
Sabel Kantah
We recently Migrated an access database onto a SQL server. Upon completion we began testing the database using the front end access database we had (Our previous setup involved two access files, one for front end and one for back end.) We almost immediately received the error.
Now we do have multiple people working on these front ends but at the time of receiving this message, I'm the only person accessing the data. My general process for testing it has been to insert the data using the form. then attempt to delete the data. I know for a fact the data is making it to the table and I know for a fact I'm the only one viewing or attempting to edit this information we used an ODBC connection to attach SQL server to the front end. Any suggestions or help is greatly appreciated, I will be monitoring this thread heavily so Expect any questions you ask me to be answered relatively fast.
This problem occurs if fields with a bit data type in the SQL Server-based database have been left blank. Microsoft Access interprets blank fields as fields that contain Null values, and the Jet database engine does not release them. As a result, the records remain locked and are not available for deletion.
I was getting this error even though I had no bit fields and no nullable fields. I stopped getting the error when I changed the DATETIME fields to SMALLDATETIME. The only thing I could think of was that Access mis-interprets the dates and then tricks itself into thinking that something else has updated the date. I thought this because I had seen another comment on a different thread that Access can round differently than SQL Server.
I added a timestamp field to the table in SQL server and re-linked it in access and that did the trick. It also solved the edit issues I was having with the table. Hope this helps other folks as well. The table already had a primary key field but apparently also needs the timestamp field.
I don't know if I should post here, or start a new topic. I am receiving the same error. I have Toad for Oracle 13.1 64 bit, and MS Office 2016 64 bit. Fresh installs of both. I have two Oracle installations, 12.2 64 bit, and 11.? 32 bit which I require for SAP Business Object IDT. I don't know where to look or what to look for to see how the products connect together to be able to export the data to any form of an access database.
John, I have been using Schema Browser> Tables. Select table(s) Data export as Access Database Files. I have an empty directory mapped that has always accepted these files. An external user later opens these Access Database files with 'R' for use in reports.
We had been using ACCESS 13 for years with no issues with TOAD up to 13.last... Since last report time, I have moved to TOAD for Oracle 14.. -- and we moved to Office 365 which changed all Office applications to 64-bit.
Now I am getting a message from Toad stating: "Could not load the Microsoft Access Database Engine. This is not the full MS ACCESS product, just the runtime engine. The 64 bit version is required for this version of TOAD."I tried with the old 32 but installation of TOAD and got the same message, except that it stated that the 32 but version is required for this version of TOAD -- which is 32 bit -- That is why I thought moving to 64 bit toad would work -- but it did not.
Download the Microsoft 365 Access Runtime which allows you to run Microsoft 365 Access applications if you don't have the desktop version of Microsoft 365 Access and need to use an application built to run with Access 2010 or later.
We currently have a major issue using Microsoft Access Database Engine 2010. The engine comes in 64-bit and 32-bit forms, which is good. However, apparently you need to always install the 32-bit version if the host process is always 32-bit. Fine, we can do this.
Our software deals with a lot of legacy components that are 32-bit, and much of it is in VB6 code, which generates 32-bit assembly. So, we are under the assumption that the driver must also be installed as 32-bit. Indeed, when we install 32-bit drivers on a 64-bit machine, and run our 32-bit applications, it works correctly.
However, the problem begins when Office 2010 64-bit is installed on the system. Trust me, we've tried to educate users that 64-bit Office is largely unnecessary, to no avail. As computers come off the assembly line with 64-bit versions installed, we're unable to keep up with support requests when our software breaks something. Either the 64-bit Office breaks our installation, or our installation breaks their Office version, but it's not pretty either way. A further issue is that non-legacy software will sometimes install the 64-bit drivers (as they should), and the two versions simply do not coexist in any reasonable manner. Either our software breaks, or their software breaks.
So, has anybody managed to find a way to make the 32-bit drivers coexist with 64-bit installations? I have seen that installing with /passive flag allows the two to be installed, and our installer does use passive. Both are being installed, but once on the system either our software no longer works, or Office constantly repairs its installation. Is there any reasonable way to make this work?
Now you can start a 32-bit MS Office application without the "re-configuring" issue.Note that the "mso.dll" registry value will already be present if a 64-bit version of MS Office is installed. In this case the value should not be deleted or renamed.
You can now use this file to install the Microsoft Access Database Engine 2010 redistributable on a system where a "conflicting" version of MS Office is installed (e.g. 64-bit version on system with 32-bit MS Office version)Make sure that you rename the "mso.dll" registry value as explained above (if needed).
I hate to answer my own questions, but I did finally find a solution that actually works (using socket communication between services may fix the problem, but it creates even more problems). Since our database is legacy, it merely required Microsoft.ACE.OLEDB.12.0 in the connection string. It turns out that this was also included in Office 2007 (and MSDE 2007), where there is only a 32-bit version available. So, instead of installing MSDE 2010 32-bit, we install MSDE 2007, and it works just fine. Other applications can then install 64-bit MSDE 2010 (or 64-bit Office 2010), and it does not conflict with our application.
Check the "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Common\FilesPaths" registry key and make sure the value "mso.dll" is NOT present. If it is present, then Office 64-bit seems to be installed and you should not need this workaround.
If both versions of Microsoft Access Database Engine 2010 can't coexists, then your only solution is to complain to Microsoft, regarding loading 64 bits versions of this in your 32 bits app is impossible directly, what you can do is a service that runs in 64 bits that comunicates with another 32 bits service or your application via pipes or networks sockets, but it may require a significant effort.
JET stands for Joint Engine Technology. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. However, it has been superseded for general use, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, "up-sized") to Microsoft's flagship SQL Server database product.
A five billion record MS Jet (Red) database with compression and encryption turned on requires about one terabyte of disk storage space[citation needed]. It comprises typically hundreds of *.mdb files.
Jet, being part of a relational database management system (RDBMS), allows the manipulation of relational databases.[1] It offers a single interface that other software can use to access Microsoft databases and provides support for security, referential integrity, transaction processing, indexing, record and page locking, and data replication. In later versions, the engine has been extended to run SQL queries, store character data in Unicode format, create database views and allow bi-directional replication with Microsoft SQL Server.
There are three modules to Jet: One is the Native Jet ISAM Driver, a dynamic link library (DLL) that can directly manipulate Microsoft Access database files (MDB) using a (random access) file system API. Another one of the modules contains the ISAM Drivers, DLLs that allow access to a variety of Indexed Sequential Access Method ISAM databases, among them xBase, Paradox, Btrieve and FoxPro, depending on the version of Jet. The final module is the Data Access Objects (DAO) DLL.[2] DAO provides an API that allows programmers to access JET databases using any programming language.
Jet allows multiple users to access the database concurrently. To prevent that data from being corrupted or invalidated when multiple users try to edit the same record or page of the database, Jet employs a locking policy. Any single user can modify only those database records (that is, items in the database) to which the user has applied a lock, which gives exclusive access to the record until the lock is released. In Jet versions before version 4, a page locking model is used, and in Jet 4, a record locking model is employed. Microsoft databases are organized into data "pages", which are fixed-length (2 kB before Jet 4, 4 kB in Jet 4) data structures. Data is stored in "records" of variable length that may take up less or more than one page. The page locking model works by locking the pages, instead of individual records, which though less resource-intensive also means that when a user locks one record, all other records on the same page are collaterally locked. As a result, no other user can access the collaterally locked records, even though no user is accessing them and there is no need for them to be locked. In Jet 4, the record locking model eliminates collateral locks, so that every record that is not in use is available.
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