XADM: High Store.exe CPU Utilization During IS Maintenance

 Last reviewed: February 3, 1998
Article ID: Q159297
The information in this article applies to:
  • Microsoft Exchange Server, version 4.0

SYMPTOMS

A single thread in the Store.exe process is utilizing 90%-100% of the CPU processor time. This high utilization coincides with the start of Microsoft Exchange Information Store (IS) Maintenance window (as configured by the IS Maintenance Schedule) and does not stop unless the Information Store Service is cycled or the computer itself is cycled.

CAUSE

One of the checks during the IS Maintenance schedule is that of Public Folder expires. During the IS maintenance run, the System (or Site) Folders are also checked. These include the Offline Address Book, the Schedule+ Free Busy folder, and the Organization Forms. In particular, the Schedule+ Free Busy folder has a default 7 day expiry on it so it is checked during the expiry period of IS Maintenance. The function performing the expiry check on the Schedule+ Free/Busy folder encounters a second copy of the folder in the deleted folders table and this causes the function to remain in a tight loop causing the high CPU utilization.

RESOLUTION

To resolve this issue a rebuild of the Site folders is necessary. To rebuild the Site folders, follow these steps:

  1. Obtain a copy of the utility Guidgen.exe. This utility is available in 

        the Microsoft Developers Network under the product samples. If you do
    not have access to this utility, Contact Microsoft Product Support
    Services. The Guidgen utility will randomly generate a globally unique
    identifier (UID) that will be used to rebuild the site folders.
2. Run Guidgen and select Option 4, Registry Format. 3. Click New GUID. 4. Copy or write down the new GUID number from the RESULT box. This number 
    will be needed in Step 10.
5. Run the Microsoft Exchange Administrator program in "raw" mode. To do 
    this, go to the command line, change to the Exchsrvr\Bin directory, and
    type "admin /r".
6. Select the Configuration container of the Site you want to rebuild and 
    highlight the Information Store Site Configuration object.
7. Select File, Raw Properties. 8. In the Object Attributes window, scroll down to the Site Folder GUID 
    attribute and select it.
9. Click Editor. 10. Replace the existing GUID number with the one generated in Step 2 (the 
    value should be entered in hexadecimal) and then click OK.
11. Click the SET button. After doing this, make sure the Edit Value 
    and Attribute Value are the same.
12. Click OK to close the dialog box. 13. Stop and restart the Information Store service with the Networks tool 
    in Control Panel.

MORE INFORMATION

The re-creation of the Site folders will delete any existing content. To re-populate the Site folders with data see below:

Repopulating the Site Folders with Data

Offline Address Book

To repopulate the offline address book Site Folder:

  1. Run the Microsoft Exchange Administrator program.
2. Select the Configuration container and get the Properties on the DS 
   Site Configuration object.
3. Click the Offline Address Book tab and click Generate Offline Address 
   Book Now.

Schedule+ Free Busy Information

The Schedule+ Free Busy Information Site Folder will be repopulated as users log on to Schedule+ and generate changes. During this period some users' Free Busy information will be temporarily unavailable.

Organizational Forms

If there was an Organizational Forms Site Folder, it must be re-created using the Microsoft Exchange Administrator program.

  1. Run the Microsoft Exchange Administrator program.
2. Click Tools, click Forms Administrator and click New.

Additional query words: kbfaq spinning
Keywords : XADM kbusage
Version : 4.0
Platform : winnt

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Last reviewed: February 3, 1998
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