Bug: Coverage annotation converted from ArcSDE will not display
When exporting feature classes with annotation stored in Oracle Spatial geometry by sde2cov command, the exported coverage with annotation won't draw.
This is a known issue with ArcSDE 9.1 Service Pack 1.
Use the DEFAULTS or SDE_LOB keywords when importing coverage with annotation. Feature classes with annotation are exported by sde2cov correctly if the feature classes were not imported using Oracle Spatial storage type.