| SEGMENT_VERIFY_EXTENTS | Verifies that the space owned by segment is appropriately reflected in the bitmap as used. | 
| SEGMENT_VERIFY_EXTENTS_GLOBAL | Verifies that the space owned by segment is appropriately reflected in the bitmap as used and that no other segment claims any of this space to be used by it. | 
| SEGMENT_MARK_CORRUPT | Marks a temporary segment as corrupt whereby facilitating its elimination from the dictionary (without space reclamation). | 
| SEGMENT_MARK_VALID | Marks a corrupt temporary segment as valid. It is useful when the corruption in the segment extent map or elsewhere has been resolved and the segment can be dropped normally. | 
| SEGMENT_DUMP_EXTENT_MAP | Dumps the extent map for a given segment. | 
| TABLESPACE_VERIFY_BITMAP | Verifies the bitmap of the tablespace with extent maps of the segments in that tablespace to make sure everything is consistent. | 
| TABLESPACE_EXTENT_MAKE_FREE | Makes this range (extent) of space free in the bitmaps. | 
| TABLESPACE_EXTENT_MAKE_USED | Makes this range (extent) of space used in the bitmaps. |