V$ROLLSTAT

SQL>DESC V$ROLLSTAT

 Name                                   Null?    Type

 -----------------------------  -------- ----------------------------
 USN                                               NUMBER
 LATCH                                             NUMBER
 EXTENTS                                           NUMBER
 RSSIZE                                            NUMBER
 WRITES                                            NUMBER
 XACTS                                             NUMBER
 GETS                                              NUMBER
 WAITS                                              NUMBER
 OPTSIZE                                           NUMBER
 HWMSIZE                                           NUMBER
 SHRINKS                                           NUMBER
 WRAPS                                              NUMBER
 EXTENDS                                           NUMBER
 AVESHRINK                                         NUMBER
 AVEACTIVE                                         NUMBER
 STATUS                                            VARCHAR2(15)
 CUREXT                                            NUMBER
 CURBLK                                            NUMBER