Attempting to do a gradual upgrade from WSS v2 to v3 (which I successfully performed on test system). Doing it in production however and I'm getting the following error indicating Schema Mismatch: [SPServerSequence] [DEBUG] [9/11/2010 12:56:47 AM]: [SPServer Name=STLSOISQL2005 Parent=SPFarm Name=wss_f1_config] BuildVersion = 12.0.0.6421. [SPServerSequence] [DEBUG] [9/11/2010 12:56:47 AM]: [SPServer Name=STLSOISQL2005 Parent=SPFarm Name=wss_f1_config] SchemaVersion = 3.0.2.0. [SPServerSequence] [DEBUG] [9/11/2010 12:56:47 AM]: [SPServer Name=STLSOISQL2005 Parent=SPFarm Name=wss_f1_config] BuildVersion = 12.0.0.6421. [SPServerSequence] [DEBUG] [9/11/2010 12:56:47 AM]: [SPServer Name=STLSOISQL2005 Parent=SPFarm Name=wss_f1_config] SchemaVersion = 3.0.2.0. [SPUtility] [DEBUG] [9/11/2010 12:56:49 AM]: File C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\60\Template\sql\store.sql, Time out = 600 sec [SPSiteCollectionMigrator] [DEBUG] [9/11/2010 12:57:02 AM]: PregrowTempDatabase: computing the size of temp db. [SPSiteCollectionMigrator] [DEBUG] [9/11/2010 12:57:02 AM]: PregrowTempDatabase: target size 2560 MB. [SPSiteCollectionMigrator] [DEBUG] [9/11/2010 12:57:02 AM]: SPContentDatabase2 Name=sts_intranet Parent=SPDatabaseServiceInstance Name=stlgp1 FullTextSearchEnabled: True [SPSiteCollectionMigrator] [DEBUG] [9/11/2010 12:57:05 AM]: SPContentDatabase2 Name=WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997 Parent=SPDatabaseServiceInstance Name=stlgp1 FullTextSearchEnabled: True [DatabaseSchema] [ERROR] [9/11/2010 12:57:08 AM]: [WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997].[proc_DetectOrphans] EXTRA String [DatabaseSchema] [ERROR] [9/11/2010 12:57:08 AM]: [WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997].[proc_DetectOrphansFix] EXTRA String [DatabaseSchema] [ERROR] [9/11/2010 12:57:08 AM]: [WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997].[proc_ScorchList] EXTRA String [DatabaseSchema] [ERROR] [9/11/2010 12:57:08 AM]: [WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997].[proc_ScorchWeb] EXTRA String [DatabaseSchema] [ERROR] [9/11/2010 12:57:08 AM]: [WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997] NON EQUAL Property SProcs [SPManager] [ERROR] [9/11/2010 12:57:08 AM]: Migrate [SPMigratableSiteCollection Parent=SPManager] failed. [SPManager] [ERROR] [9/11/2010 12:57:08 AM]: Schema mismatch between SPContentDatabase2 Name=sts_intranet Parent=SPDatabaseServiceInstance Name=stlgp1 and SPContentDatabase2 Name=WSSUP_Temp_efd21ec3-e059-4d42-8c57-5c5ade83e997 Parent=SPDatabaseServiceInstance Name=stlgp1 [SPManager] [ERROR] [9/11/2010 12:57:08 AM]: at Microsoft.SharePoint.Upgrade.SPSiteCollectionMigrator.Migrate() at Microsoft.SharePoint.Upgrade.SPManager.Migrate(Object o, Boolean bRecurse) [SPManager] [DEBUG] [9/11/2010 12:57:08 AM]: Elapsed time migrating [SPMigratableSiteCollection Parent=SPManager]: 00:00:21.8758400. [SPManager] [INFO] [9/11/2010 12:57:08 AM]: Gradual Upgrade session finishes. root object = SPMigratableSiteCollection Parent=SPManager, recursive = True. 6 errors and 0 warnings encountered. [SPManager] [DEBUG] [9/11/2010 12:57:08 AM]: Removing exclusive upgrade regkey by setting the mode to none

Many things can cause issues during the migration process. Schema differences could be related to patch levels etc. For the defacto guide to migrating SharePoint 2003 to 2007 in a real world environment, start here: http://www.cjvandyk.com/blog/Lists/Posts/Post.aspx?ID=107I trust that answers your question... Thanks C http://www.cjvandyk.com/blog

Did you happen to figure this out? I am getting the same error and can't find any support for it.