| ERROR | invalid blocksize in cross platform datafile string |
| CAUSE | Blocksize in header of datafile copy being converted at target was invalid. Either datafile has not been made read/write with compatibility 10.0 or greater at source database or datafile copy is corrupted. |
| ACTION | Make a new datafile copy taken after tablespace has been made read/write with compatibility 10.0 at source database and retry conversion. |