This article was previously published under Q307219
This article has been archived. It is offered "as is" and will no longer be updated.
After you update the Active Directory schema in a Windows 2000 forest, replication between domain controllers stops while the indexes are rebuilt and the schema cache is updated.
In a large Active Directory forest, this delay may be significant. The domain controllers may not be able to restart the replication process for several hours.
This behavior occurs because the schema cache update and the reindexing process are synchronous operations. Synchronous operations require precise timing and a fixed timing signal. This timing requirement can stop nearly all other processor activities until the operation is complete.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English-language version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.
This fix changes the update behavior so that when a new indexed attribute is added, the domain controller with the fix installed on it does not search the whole database to create an empty index. This allows Active Directory replication to restart earlier.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
For additional information about how to install multiple hotfixes with a single restart, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot