Check the space available on your DSA DR setup target. Our DR DB was bloated twice the size, had a case open for over a month to find out why, vendor never came back with an answer. We could not keep enough free space. Just kept adding and adding more disk. We stopped and disabled fillDB service on DR targets, then problem went away and a lot of other issues we were facing.
We will schedule a DR setup redo (drop DB) soon. Then we will watch the size again to see if there is a true defect. We then may just switch to another non-Bigfix replication solution, which there are a few.