COleServerDoc and CArchive Corrupts Large Files (193558)
The information in this article applies to:
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Server 4.0
This article was previously published under Q193558 SYMPTOMS
Applications that use the IStorage and IStream classes, or other classes
derived from them, to save data in the form of OLE Structured Storage may
generate corrupted data files when the size of the output file exceeds some
threshold.
For example, an application that uses the CArchive method of the
COleServerDoc base class may result in the following error being generated
or logged:
0x80030109 (STG_E_DOCFILECORRUPT)
In such cases, the resultant output file may be smaller than expected with
the first part of the file being overwritten with data that should have
been near the end of the file.
CAUSE
The code that implements this functionality uses one of two modes of
operation depending on the amount of memory that is available in a
particular memory heap. A problem in the low-memory mode results in the
output file being corrupted. Generation of a large or very fragmented file
may tend to use up more of the memory in this heap, resulting in corrupted
output being generated.
The size threshold at which corruption takes place will depend on various
factors unique to each system but would typically only affect files larger
than 80 MB.
RESOLUTION
A supported fix that corrects this problem is now available from Microsoft,
but has not been fully regression tested and should be applied only to
systems experiencing this specific problem. If you are not severely
affected by this specific problem, Microsoft recommends that you wait for
the next Windows NT service pack that contains this fix.
To resolve this problem immediately, contact Microsoft Product Support
Services to obtain the fix. For a complete list of Microsoft Product
Support Services phone numbers and information on support costs, please go
to the following address on the World Wide Web:
The English version of this fix should have the following file attributes
or later:
Date Time Size File Name Platform
-------------------------------------------------------------
09/25/98 01:07p 698,640 Ole32.dll (x86)
03/24/98 06:02p 102,160 Rpcss.exe (x86)
09/25/98 01:07p 1,249,552 Ole32.dll (Alpha)
03/24/98 06:04p 181,008 Rpcss.exe (Alpha)
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0.
| Modification Type: | Major | Last Reviewed: | 3/29/2006 |
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| Keywords: | kbHotfixServer kbQFE kbbug kbfix kbQFE KB193558 |
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