1. An apparatus to serialize process instances in a workflow management system comprising: a memory that is to include a status table to store entries associated with a plurality of process instances, wherein each entry of a respective process instance is to include at least an ID field to identify the respective process instance, a variable field to hold a value for a variable maintained by the respective process instance, and a status field to hold a value for a current state of the respective process instance; and a processor to: determine a value, associated with redundant information held in at least two different datastores, for a variable maintained by a new process instance in the workflow management system; determine, via the status table, if a process instance of the plurality of process instances that is active maintains a current value which is the same as the new value maintained by the new process instance; and serialize access to the redundant information held in the at least two different datastore by halting the new process instance until completion of the process instance that is active, wherein the halting is to be maintained without a lock being assigned, and wherein the new process instance is to proceed without the lock being assigned.