OCI-30018
        Create Rollback Segment failed, USN string is out of range
        
        
        Cause
        the system runs out of undo segment number. Too many undo segments exist.
        Action
        drop some of the unused undo segments and retry operation.
        
     
    
    
        OCI-30018
        Create Rollback Segment failed, USN string is out of range
        
        
        Cause
        the system runs out of undo segment number. Too many undo segments exist.
        Action
        drop some of the unused undo segments and retry operation.
        
     
    
    
        OCI-30018
        Create Rollback Segment failed, USN string is out of range
        
        
        Cause
        the system runs out of undo segment number. Too many undo segments exist.
        Action
        drop some of the unused undo segments and retry operation.