v$osstat

SQL> select * from v$osstat;

STAT_NAME                                     VALUE  OSSTAT_ID COMMENTS                                                         CUM
---------------------------------------- ---------- ---------- ---------------------------------------------------------------- ---
NUM_CPUS                                                    Number of active CPUs                                            NO
IDLE_TIME                                6.5569E+10           Time (centi-secs) that CPUs have been in the idle state          YES
BUSY_TIME                                            Time (centi-secs) that CPUs have been in the busy state          YES
USER_TIME                                            Time (centi-secs) spent in user code                             YES
SYS_TIME                                             Time (centi-secs) spent in the kernel                            YES
IOWAIT_TIME                                           Time (centi-secs) spent waiting for IO                           YES
NICE_TIME                                                Time (centi-secs) spend in low-priority user code                YES
RSRC_MGR_CPU_WAIT_TIME                                     Time (centi-secs) processes spent in the runnable state waiting  YES
LOAD                                     .          Number of processes running or waiting on the run queue          NO
NUM_CPU_CORES                                              Number of CPU cores                                              NO
NUM_CPU_SOCKETS                                             Number of physical CPU sockets                                   NO
PHYSICAL_MEMORY_BYTES                    1.0142E+11        Physical memory size in bytes                                    NO
VM_IN_BYTES                                               Bytes paged in due to virtual memory swapping                    YES
VM_OUT_BYTES                                              Bytes paged out due to virtual memory swapping                   YES
TCP_SEND_SIZE_MIN                                      TCP Send Buffer Min Size                                         NO
TCP_SEND_SIZE_DEFAULT                                 TCP Send Buffer Default Size                                     NO
TCP_SEND_SIZE_MAX                                   TCP Send Buffer Max Size                                         NO
TCP_RECEIVE_SIZE_MIN                                   TCP Receive Buffer Min Size                                      NO
TCP_RECEIVE_SIZE_DEFAULT                              TCP Receive Buffer Default Size                                  NO
TCP_RECEIVE_SIZE_MAX                                TCP Receive Buffer Max Size                                      NO
GLOBAL_SEND_SIZE_MAX                                Global send size max (net.core.wmem_max)                         NO
GLOBAL_RECEIVE_SIZE_MAX                             Global receive size max (net.core.rmem_max)                      NO

 rows selected.

SQL>