Is there a way we can set parameters in the PRC: Update Project Reporting Base Summaries and Perform

We're in version 12.0.6 - and find that after a problem some time back, we're still not able to run this successfully across the entire business.

There is an SR raised, but it advises is to run the PRC: Refresh Project Reporting Base Summaries and Performance Data to clear up - which we have started doing, this does have parameters so we can run it in batches out of working hours.  We can't take the system out of action whilst this is going on, so this alone will take at least 2 weeks, as you can imagine by the time that is completed, we shall have amassed more transactions for the "Update" to deal with.  A potential catch 22!