What is a "cumulative" save?

In table 51 of the backup/restore manual discussing restoring objects, it 
notes: 
 

 Table 51. Restore Procedures for Changed Objects                       

 Save Method     
 Description                    
 Restore Procedure   

 Cumulative      
                 
                 
 You save all changes since the 
 last complete save operation.  
                                
  "Restoring Changed 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.1?DT=20000404104001#HDRRSTCL>
   
  Objects by Library" 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.1?DT=20000404104001#HDRRSTCL>
  
  in topic 3.9.1.1 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.1?DT=20000404104001#HDRRSTCL>
     

 Not cumulative  
                 
                 
                 
 You save changes since the     
 last SAVCHGOBJ operation.      
                                
                                
  "Restoring Changed 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.2?DT=20000404104001#HDRRSTCO>
   
  Objects 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.2?DT=20000404104001#HDRRSTCO>
              
  Individually" in 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.2?DT=20000404104001#HDRRSTCO>
     
  topic 3.9.1.2 
<http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/qb3ale04/3.9.1.2?DT=20000404104001#HDRRSTCO>
        

I'm not sure what is meant by "the last complete save operation."  Our strategy 
is, 

once a week, do a SAVLIB *ALLUSR, and daily to do a SAVCHGOBJ *ALLUSR.  In both 

cases the REFDATE is *SAVLIB.  My understanding was that by specifying *SAVLIB, 

the SAVCHGOBJ was cumulative in the sense that each day was (essentially) the 

previous days objects plus any new ones that had changed.

 

So, 1) is my understanding of SAVCHGOBJ REFDATE(*SAVLIB) 

correct, and 2) is it cumulative in the sense that table 51 means it?

 

This has come about as we prepare for our DR test.

 

==Kevin 



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