1)While upgrading from 9030x to 9032, You need to upgrade the process and audit tables. If you have table data in millions then better use single table each time while upgrading.
Better sequence to use as follow:
-> dataupgrade -initialize process(only once)
-> dataupgrade -update process(execute minimum 1 time if you are providing all 4 table name at once and maximum 4 times,if you are providing 1 table name at a time)
-> dataupgrade -cleanup(no need to provide process or audit. you can run this at the end only once but its recomended that you run once completing process tables and once after completing audit tables)
-> dataupgrade -initialize audit(only once)
-> dataupgrade -update audit(You can provide both table at a time)
-> dataupgrade -cleanup