DOCUMENT:Q255252  11-JUN-2002  [visualc]
TITLE   :INFO: Accessing and Building Projects Over a Network Using VC++
PRODUCT :Microsoft C Compiler
PROD/VER::5.0,6.0
OPER/SYS:
KEYWORDS:kbnetwork kbide kbOSUNIX kbVC kbVC500 kbVC600 kbOSWin kbDevStudio kbOSNovell kbDSupport

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The information in this article applies to:

 - Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 
 - Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 
 - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
 - Microsoft Visual C++.NET (2002) 
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SUMMARY
=======

Visual C++ was not specifically designed and tested to access and build projects
directly over a network. If you try to perform these tasks with Visual C++, you
will experience problems with building and performance. Visual C++ does not
perform any special operations to accommodate network drives and shares, and it
is unaware of whether the file it is reading or writing is on a network drive or
a local drive. Use of Visual C++ in this manner is not supported.

MORE INFORMATION
================

You will experience performance problems when you use Visual C++ to access
projects in the following configurations:

 - Share a Visual C++ project on a Windows 98-based computer. On a computer
   running Windows NT 4.0, use Visual C++ to open the shared project. From the
   FileView tab, select a file and double-click to open it. You will experience
   a delay. This is due to the fact that Windows 98 is a nonopportunistic
   locking server. (If the same project is shared from Windows NT 4.0 or Windows
   2000, you might not experience this problem.)

 - Share a Visual C++ project on a Windows 98-based computer. On a computer
   running Windows NT 4.0, map the share to a drive. Open the project from the
   mapped drive using Visual C++. You will notice that Visual C++ accesses the
   project's source and header files approximately every 4 seconds. (If the same
   project is shared from Windows NT 4.0 or Windows 2000, you might not
   experience this problem.)

There may be several other network configurations under which Visual C++
performance could suffer. For example; you may be using SAMBA to obtain files
from remote UNIX computers. SAMBA is a file service that attempts to emulate
Windows server message block (SMB) network file protocol.

Microsoft recommends that you use source code control software to obtain a local
copy of projects for use with Visual C++. Microsoft Visual SourceSafe is source
code control software that is optimized for use with Visual C++. There are other
source code control software packages available, but they may not be optimized
for use with Visual C++, so you may run into performance problems. In such
cases, contact the vendor of the source code control software for assistance.

REFERENCES
==========


For additional information, click the article numbers below to view the articles
in the Microsoft Knowledge Base:

   Q236399 HOWTO: Troubleshoot Visual C++ Performance Problems

   Q130615 PRB: Unwanted Rebuilds Occur When Using NMAKE or Visual C++

See the following area in the MSDN Library for Visual C++ 6.0 for documentation
on Visual SourceSafe:

   MSDN Library; Visual Studio 6.0 Documentation; Visual SourceSafe
   Documentation

See the following topic in the MSDN Library for Visual C++ 6.0 for documentation
on Opportunistic Locks:

   MSDN Library; Platform SDK; Base Services; Files and I/O; File Systems; About
   File Systems; Shared File System Features; Opportunistic Locks

http://msdn.microsoft.com/visualc/technical/articles/teamwork/default.asp

The third-party products discussed in this article are manufactured by vendors
independent of Microsoft; we make no warranty, implied or otherwise, regarding
these products' performance or reliability.

Additional query words:

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Keywords          : kbnetwork kbide kbOSUNIX kbVC kbVC500 kbVC600 kbOSWin kbDevStudio kbOSNovell kbDSupport kbGrpDSTools kbPerformance 
Technology        : kbVCsearch kbAudDeveloper kbVC500 kbVC600 kbVC32bitSearch kbVCNET kbVC500Search
Version           : :5.0,6.0
Issue type        : kbinfo

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Copyright Microsoft Corporation 2002.