XADM: IS Shuts Down with JET Reporting Out of Disk Space Due to SFM

ID: Q196217

The information in this article applies to:

SYMPTOMS

The Microsoft Exchange Server information store shuts itself down when the Jet database engine (EDB) reports that the hard disk drive containing the transaction logs is full. This problem may also occur when there is sufficient disk space available but the transaction logs are contained within a Services for Macintosh (SFM) volume.

The following sequence of events will appear in the Windows NT Application Event logs prior to the information store shutting down: 


   Event ID:    32
   Source:      EDB
   Type:        Error
   Category:    Logging/Recovery
   Description: MSExchangeIS ((273) ) Unable to create the log. The drive
                may be read-only or out of disk space. Error -1811. 

   Event ID:    1111
   Source:      MSExchangeIS
   Type:        Error
   Category:    General
   Description: An error occurred while writing to the database log file.
                Attempting to stop the Microsoft Exchange Information
                Store. 

   Event ID:    1101
   Source:      MSExchangeIS Private
   Type:        Error
   Category:    Background Cleanup
   Description: Error -510 occurred during a background cleanup on message
                1-E85. 

   Event ID:    1101
   Source:      MSExchangeIS Private
   Type:        Error
   Category:    Background Cleanup
   Description: Error -510 occurred during a background cleanup on message
                1-E8C. 

   Event ID:    1025
   Source:      MSExchangeIS Private
   Type:        Warning
   Category:    Transport General
   Description: An error occurred. Function name or description of problem:
                EcDoDeliverMessage Error: -510 

   Event ID:    1101
   Source:      MSExchangeIS Private
   Type:        Error
   Category:    Background Cleanup
   Description: Error -510 occurred during a background cleanup on message
                1-E93. 

   Event ID:    5004
   Source:      MSExchangeSA
   Type:        Error
   Category:    General
   Description: Generation of the offline Address Book is complete. Result:
                The Microsoft Exchange Server computer is not available.
                Either there are network problems or the Microsoft Exchange
                Server computer is down for maintenance. Microsoft Exchange
                Server Information Store ID no: 8004011d-0525-00000000.
After the information store has shut itself down, the administrator can restart the information store provided there is sufficient disk space available.


CAUSE

This problem may occur when SFM has been installed on the Exchange Server computer and the Jet transaction logs (DSADATA and MDBDATA) reside on a Macintosh volume. After the information store has shut itself down after the error has occurred, a zero byte Edbtmp.log or a zero byte Edb.log file will be left in the MDBDATA directory. This error condition arises when the Edb.log file is full and needs to be rolled over to the next generation log file number. A zero byte Edbtmp.log file is created by Jet and is extended to a file size of 5 MB. Edb.log is then renamed to the next numbered log file (for example, Edb000xx.log). Edbtmp.log is then renamed to Edb.log and then jet continues processing new incoming messages.

The problem occurs in the transition of renaming these files when SFM is involved. With SFM, there are essentially two file indexes that need to be kept: NTFS and Apple Fileshare Protocol (AFP). A timing condition can arise where the AFP update occurs after the file has already been renamed and thus no longer exists under the old name in NTFS. If so, SFM will create a new zero byte file, which causes an error condition that reports back to Jet that "The file already exists." This error is eventually interpreted by Jet as being an out of disk space condition and the information store then shuts itself down to maintain the database integrity.


WORKAROUND

This problem can be avoided by not having any Jet transaction logs located on a SFM volume.


RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual fix. For information on obtaining the latest service pack, please go to:

For information on obtaining the individual fix, contact Microsoft Product Support Services. 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:
http://support.microsoft.com/support/supportnet/default.asp

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support


STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.

Additional query words: 


Keywords          : kbbug4.00 kbfix4.00 nt4sp5fix 
Version           : WinNT:4.0, 5.0, 5.5
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: May 5, 1999