|  
 SEGMENT_NAME 
 | 
 
 VARCHAR2(30) 
 | 
 
 NOT NULL 
 | 
 
 Name of the rollback segment 
 | 
|  
 OWNER 
 | 
 
 VARCHAR2(6) 
 | 
 | 
 
 Owner of the rollback segment 
 | 
|  
 TABLESPACE_NAME 
 | 
 
 VARCHAR2(30) 
 | 
 
 NOT NULL 
 | 
 
 Name of the tablespace containing the rollback segment 
 | 
|  
 SEGMENT_ID 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 ID number of the rollback segment 
 | 
|  
 FILE_ID 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 File identifier number of the file containing the segment head 
 | 
|  
 BLOCK_ID 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 ID number of the block containing the segment header 
 | 
|  
 INITIAL_EXTENT 
 | 
 
 NUMBER 
 | 
 | 
 
 Initial extent size in bytes 
 | 
|  
 NEXT_EXTENT 
 | 
 
 NUMBER 
 | 
 | 
 
 Secondary extent size in bytes 
 | 
|  
 MIN_EXTENTS 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 Minimum number of extents 
 | 
|  
 MAX_EXTENTS 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 Maximum number of extent 
 | 
|  
 PCT_INCREASE 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 Percent increase for extent size 
 | 
|  
 STATUS 
 | 
 
 VARCHAR2(16) 
 | 
 | 
 
 Rollback segment status 
 | 
|  
 INSTANCE_NUM 
 | 
 
 VARCHAR2(40) 
 | 
 | 
 
 Rollback segment owning Oracle Real Application Cluster instance number 
 | 
|  
 RELATIVE_FNO 
 | 
 
 NUMBER 
 | 
 
 NOT NULL 
 | 
 
 Relative file number of the segment header 
 |