PRB: IIS May Hang If You Enable ASP Server-Side Script Debugging (312941)
The information in this article applies to:
- Microsoft Internet Information Server 4.0
- Microsoft Internet Information Services 5.0
- Microsoft Internet Information Services version 6.0
This article was previously published under Q312941 We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site: SYMPTOMS If you enable Active Server Pages (ASP) server-side script
debugging in the Web site configuration and ASP encounters a scripting error,
Internet Information Services (IIS) may hang, but no error messages are sent to
the client browser.
NOTE: This behavior may occur if you have installed the Microsoft
Script Debugger or Microsoft Visual Interdev on a server that is running
Microsoft IIS 4.0 or later in a development environment. CAUSE This behavior occurs because you have not properly
configured the default debugger that is in use. RESOLUTION To resolve this behavior, make the additional
configurations that are outlined in the following article in the Microsoft
Knowledge Base:
281427 PRB: Microsoft Script Debugger Does Not Break at Error
STATUSThis
behavior is by design.MORE INFORMATION You should not enable the Enable Server-Side Script Debugging property on a production environment.
The enabling of
server-side script debugging causes ASP to run in a single threaded mode;
therefore, one thread at a time only executes for each application. Even if you
properly configure the Microsoft Script Debugger, this dramatically affects the
Web server performance.
When ASP server-side script debugging is
enabled, the value for ASP Requests Executing in Performance Monitor will never be more than 1. The value for ASP Requests Queued will grow depending on the number of requests that are made to
the server. This is known as "ASP execution serialization".
Modification Type: | Minor | Last Reviewed: | 6/23/2005 |
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Keywords: | kbdocerr kbprb KB312941 |
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