Hello, I was able to display the topology until yesterday but today...When trying to display the _Datacenter Topology I am getting an error: Date: 5/4/2011 5:41:18 PM Application: System Center Operations Manager 2007 R2 Application Version: 6.1.7221.0 Severity: Error Message: Microsoft.Mom.Isam.IsamVersionStoreOutOfMemoryException: Version store out of memory (-1069) at Microsoft.Mom.Isam.?A0x5359b89f.HandleError(Int32 err) at Microsoft.Mom.Isam.EseInterop.JetPrepareUpdate(JET_TABLEID& tableid, JET_PREP prep) at Microsoft.Mom.Isam.Cursor.BeginEditForUpdate() at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.EseRow.InsertUpdateRecord(Boolean insert) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.EseRow.EditRecord(Boolean insert) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.CacheDirectory.AddReference(String name) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.IndexTable..ctor(CacheTable table, ObjectTable objectTable, Int32 count, DateTime timeStamp, DateTime fullUpdateTime, String findIndex) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.CacheDirectory.FindIndexTable(Guid managementGroup, String primaryId, String queryType, Guid targetType, Guid target, String criteria, Collection`1 fields) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.Query`1.GetIndexTable(CacheSession session, Boolean create) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.Query`1.OpenIndexTable(CacheSession session) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.Query`1.InternalQuery(CacheSession session, UpdateReason reason) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.Query`1.TryDoQuery(UpdateReason reason, CacheSession session) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Cache.Query`1.DoQueryJob(Object sender, ConsoleJobEventArgs args) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Console.ConsoleJobExceptionHandler.ExecuteJob(IComponent component, EventHandler`1 job, Object sender, ConsoleJobEventArgs args) I have 24 Gb of RAM, 500+ Servers, the OperationsManager Database is on the Enterprise Cluster external. Any idea? Thanks, DomSystem Center Operations Manager 2007 / System Center Configuration Manager 2007 R2 / Forefront Client Security / Forefront Identity Manager

Hi Dom, See the following threads for some hints http://www.oostdam.info/index.php/sectie-blog/242-scom-version-store-memory-error-1069 http://social.technet.microsoft.com/Forums/en-US/systemcentermonitoring/thread/9d166f9c-cc57-454c-80a6-80eef7d0945f http://www.networksteve.com/exchange/topic.php/The_version_store_has_reached_its_maximum_size_because_of_unresp/?TopicId=23737&Posts=1 Regards, PetePete Zerger, MVP-OpsMgr and SCE | http://www.systemcentercentral.com

Hi, May I know if there were any changes before the issue occured? Please try clearing the cache by running the SCOM console via command line with the parameter “/clearcache” and see if it works: Example: %Program files%\System Center Operations Manager 2007\Microsoft.mom.ui.console.exe /ClearCache If the issue persists, please also check the Event Log and see if there are any related errors; if so, please let us know the details. Hope this helps. Thanks. Nicholas Li - MSFT Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.