If the Replicat for which you are creating a checkpoint table will run in an Oracle RAC configuration, it is recommended that you increase the PCTFREE attribute of the Replicat checkpoint table to as high a value as possible, as high as 90 if possible. This accommodates the more frequent checkpointing that is inherent in coordinated processing. This change must be made before starting the Replicat group for the first time. See Creating an Online Replicat Group for more information about coordinated Replicat.