After copy an ArcSDE connection file to another folder and rename the original ArcSDE connection file, the original ArcSDE file is still shown up in ArcCatalog and referencing to the new path. But GP tool cannot make use of it.
Either use the copied ArcSDE connection file:C:\document and settings\all users\application data\ESRI\ArcCatalog\sde@ora10gr2.sdeor copy the file back to: