FIX: SQLOLEDB stops responding when the sqlxmlx.dll file unloads unexpectedly

When the Microsoft SQL OLE DB Provider (SQLOLEDB) tries to access the sqlxmlx.dll file, and the sqlxmlx.dll file unloads unexpectedly, an access violation occurs, and the SQLOLEDB provider stops responding.

When this problem occurs, the following events are logged:

Event 1

Event Type: Error
Event Source: Application Error
Event Category: (100)
Event ID: 1000
Date: 6/20/2005
Time: 8:09:06 AM
User: N/A
Computer: ServerName
Description:
Faulting application dllhost.exe, version 5.2.3790.0, faulting module sqloledb.dll, version 2000.85.1022.0, fault address 0x0004503f.
For more information, see Help and Support Center at http://support.microsoft.com.
Data: 0000: 41 70 70 6c 69 63 61 74 Applicat 0008: 69 6f 6e 20 46 61 69 6c ion Fail 0010: 75 72 65 20 20 64 6c 6c ure dll 0018: 68 6f 73 74 2e 65 78 65 host.exe 0020: 20 35 2e 32 2e 33 37 39 5.2.379 0028: 30 2e 30 20 69 6e 20 73 0.0 in s 0030: 71 6c 6f 6c 65 64 62 2e qloledb. 0038: 64 6c 6c 20 32 30 30 30 dll 2000 0040: 2e 38 35 2e 31 30 32 32 .85.1022 0048: 2e 30 20 61 74 20 6f 66 .0 at of 0050: 66 73 65 74 20 30 30 30 fset 000 0058: 34 35 30 33 66 4503f

Event 2

Event Type: Error
Event Source: COM+
Event Category: Unknown
Event ID: 4786
Date: 6/20/2005
Time: 8:09:06 AM
User: N/A
Computer: ServerName
Description:
The system has called a custom component and that component has failed and generated an exception. This indicates a problem with the custom component. Notify the developer of this component that a failure has occurred and provide them with the information below.
Component Prog ID:
Server Application ID: {00000000-0000-0000-0000-0000000000000}
Server Application Instance ID: {00000000-0000-0000-0000-000000000000}
Server Application Name: Application Name
The serious nature of this error has caused the process to terminate.
Exception: C0000005
Address: 0x0185503F
Call Stack:
sqloledb!DllMain + 0x255df
sqloledb!DllMain + 0x1c358
sqloledb!DllMain + 0xc1d6
msado15!DllCanUnloadNow + 0x6ab5
msado15!DllGetClassObject + 0x2f28

SQLOLEDB tries to access a global object in the sqlxmlx.dll file. However, the global object is already released, and this behavior causes the access violation.

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.Note For a list of all the hotfixes available for MDAC 2.8, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

For more information about the SQLOLEDB provider, visit the following Microsoft Developer Network (MSDN) Web site: