V$OSSTAT displays system utilization statistics from the operating system. One row is returned for each system statistic.
| Column | Datatype | Description |
|---|---|---|
STAT_NAME |
VARCHAR2(64) |
Name of the statistic (see Table 8-3) |
VALUE |
NUMBER |
Instantaneous statistic value |
OSSTAT_ID |
NUMBER |
Statistic ID |
COMMENTS |
VARCHAR2(64) |
Any additional OS-specific clarifications for the statistic |
CUMULATIVE |
VARCHAR2(3) |
Indicates whether the statistic is cumulative (that is, accumulates over time) (YES) or not (NO) |
| Statistic Name | Description |
|---|---|
|
NUM_CPUS |
Number of CPUs or processors available |
|
IDLE_TIME |
Number of hundredths of a second that a processor has been idle, totalled over all processors |
|
BUSY_TIME |
Number of hundredths of a second that a processor has been busy executing user or kernel code, totalled over all processors |
|
USER_TIME |
Number of hundredths of a second that a processor has been busy executing user code, totalled over all processors |
|
SYS_TIME |
Number of hundredths of a second that a processor has been busy executing kernel code, totalled over all processors |
|
IOWAIT_TIME |
Number of hundredths of a second that a processor has been waiting for I/O to complete, totalled over all processors |
|
NICE_TIME |
Number of hundredths of a second that a processor has been busy executing low-priority user code, totalled over all processors |
|
AVG_IDLE_TIME |
Number of hundredths of a second that a processor has been idle, averaged over all processors |
|
AVG_BUSY_TIME |
Number of hundredths of a second that a processor has been busy executing user or kernel code, averaged over all processors |
|
AVG_USER_TIME |
Number of hundredths of a second that a processor has been busy executing user code, averaged over all processors |
|
AVG_SYS_TIME |
Number of hundredths of a second that a processor has been busy executing kernel code, averaged over all processors |
|
AVG_IOWAIT_TIME |
Number of hundredths of a second that a processor has been waiting for I/O to complete, averaged over all processors |
|
AVG_NICE_TIME |
Number of hundredths of a second that a processor has been busy executing low-priority user code, averaged over all processors |
|
OS_CPU_WAIT_TIME |
Total number of hundredths of a second that processes have been in a ready state, waiting to be selected by the operating system scheduler to run |
|
RSRC_MGR_CPU_WAIT_TIME |
Total number of hundredths of a second that Oracle processes have been in a ready state, waiting for CPU to be available for their consumer group in the currently active resource plan |
|
VM_PAGE_IN_BYTES |
Total number of bytes of data that have been paged in due to virtual memory paging |
|
VM_PAGE_OUT_BYTES |
Total number of bytes of data that have been paged out due to virtual memory paging |
|
PHYSICAL_MEMORY_BYTES |
Total number of bytes of physical memory |
|
LOAD |
Current number of processes that are either running or in the ready state, waiting to be selected by the operating-system scheduler to run. On many platforms, this statistic reflects the average load over the past minute. |
|
NUM_CPU_CORES |
Number of CPU cores available (includes subcores of multicore CPUs as well as single-core CPUs) |
|
NUM_CPU_SOCKETS |
Number of CPU sockets available (represents an absolute count of CPU chips on the system, regardless of multithreading or multi-core architectures) |
|
TCP_SEND_SIZE_MIN |
Minimum size of the TCP send buffer |
|
TCP_SEND_SIZE_DEFAULT |
Default size of the TCP send buffer |
|
TCP_SEND_SIZE_MAX |
Maximum size of the TCP send buffer |
|
TCP_RECEIVE_SIZE_MIN |
Minimum size of the TCP receive buffer |
|
TCP_RECEIVE_SIZE_DEFAULT |
Default size of the TCP receive buffer |
|
TCP_RECEIVE_SIZE_MAX |
Maximum size of the TCP receive buffer |
|
GLOBAL_SEND_SIZE_MAX |
Maximum size of the global send buffer |
|
GLOBAL_RECEIVE_SIZE_MAX |
Maximum size of the global receive buffer |
Note:
The availability of all statistics except forNUM_CPUS and RSRC_MGR_CPU_WAIT_TIME is subject to the operating system platform on which the Oracle Database is running.