Recently I have been asked to investigate the following error on an Exadata system.
ORA-64307: hybrid columnar compression is not supported for tablespaces on this storage type
Well, that’s simple I thought! Must be (d)NFS mounted storage, right? Everyone knows that you can have HCC on Exadata (and a few other storage products). So I looked at the problem and soon found out that the data files in question all resided on the cells. Here is the sequence of events: