Don't pay attention to the "red zone" visualization or the 99% usage the DP GUI displays, as these just show the relation of currently allocated records to the total size of the so-far allocated table space. This is almost always 99% full, as the table space is only allocated more disk blocks when actually needed. You so far have no CDB extensions except for a single one to fnames.dat, and that one is only 50% filled so far. Compared to other IDBs I've seen that's tiny. For the time being, you can comfortably grow your CDB by adding extents. I typically extend a table space of the CDB when the previous one exceeds 50% fill, so in your case, it is the right time now to add another extent to fnames.dat as well as to fn1.ext. Apart from that, you are living well in the specs. BTW, since this is 6.20 on W2k3, I assume it's not just running since yesterday, so the dynamics are actually quite relaxed. Or did this start to grow significantly just shortly?