1. In a computing system having a memory storing an original data object, a method for changing the original data object into a new data object using a single command, the steps of the method comprising: validating the command; creating a ghost data object; populating the ghost data object with data from the original data object; applying transaction log records from the original data object to the ghost data object; exclusively locking the original data object; applying final transaction log records from the original data object to the ghost data object; switching the ghost data object to become the new data object.