BEGIN_TIME

DATE

Begin time of the interval

END_TIME

DATE

End time of the interval

INTSIZE_CSEC

NUMBER

Interval size (in hundredths of a second)

SEQUENCE#

NUMBER

A sequential counter that uniquely describes the V$RSRC_PLAN_HISTORY entry to which these PDB statistics apply. When the instance is restarted, this value is reset to zero.

CPU_CONSUMED_TIME

NUMBER

Cumulative amount of CPU time consumed by all sessions in the PDB, in milliseconds

CPU_WAIT_TIME

NUMBER

Cumulative amount of time that sessions waited for CPU because of resource management, in milliseconds. This does not include waits due to latch or enqueue contention, I/O waits, and so on. When CPU resources are not being actively managed, this value is set to zero.

NUM_CPUS

NUMBER

Number of CPUs that the Resource Manager is utilizing. If instance caging is enabled, then this column is equal to the value of the CPU_COUNT initialization parameter. If instance caging is not enabled, then this column is equal to the total number of CPUs in the system.

RUNNING_SESSIONS_LIMIT

NUMBER

Maximum number of sessions in the PDB that can run simultaneously. The value of this column is NUM_CPUS multiplied by the PDB's MAX_UTILIZATION_LIMIT directive in the current Resource Manager plan.

AVG_RUNNING_SESSIONS

NUMBER

Average number of sessions in the PDB that are currently running

AVG_WAITING_SESSIONS

NUMBER

Average number of sessions in the PDB that are waiting for CPU due to resource management. When CPU resources are not being actively managed, this value is set to zero.

CPU_UTILIZATION_LIMIT

NUMBER

Maximum percentage of CPU that the PDB can use at any time, with respect to the total number of CPUs in the system. The value of this column is RUNNING_SESSIONS_LIMIT divided by the number of CPUs in the system. If instance caging is enabled, then this value is derived using the CPU_COUNT initialization parameter.

AVG_CPU_UTILIZATION

NUMBER

Average percentage of CPU consumed by the PDB, with respect to the total number of CPUs in the system

IOPS

NUMBER

I/O operations per second during the previous minute for this PDB

IOMBPS

NUMBER

I/O megabytes per second during the previous minute for this PDB

IOPS_THROTTLE_EXEMPT

NUMBER

Indicates how much of the I/O per second in the current PDB was exempted from throttling.

For example, if the value in the IOPS column is 20 I/Os and the value in the IOPS_THROTTLE_EXEMPT column is 5 I/Os, then 5 I/Os of the 20 I/Os in that second were exempted from throttling.

I/O throttling is defined by the MAX_IOPS database initialization parameter.

IOMBPS_THROTTLE_EXEMPT

NUMBER

Indicates how many megabytes of I/O executed per second in the current PDB were exempted from throttling.

For example, if the value in the IOMBPS column is 200 megabytes and the value in the IOMBPS_THROTTLE_EXEMPT column is 50 megabytes, then 50 megabytes of the 200 megabytes were exempt from throttling.

I/O megabytes per second throttling is defined by the MAX_MBPS database initialization parameter.

AVG_IO_THROTTLE

NUMBER

Average throttle time per I/O operation in milliseconds during the previous minute for this PDB

AVG_ACTIVE_PARALLEL_STMTS

NUMBER

The average number of parallel statements that were running during the 1-minute metric window

AVG_QUEUED_PARALLEL_STMTS

NUMBER

The average number of parallel statements that were queued during the 1-minute metric window

AVG_ACTIVE_PARALLEL_SERVERS

NUMBER

The average number of parallel servers that were actively running as part of a parallel statement during the 1-minute metric window

AVG_QUEUED_PARALLEL_SERVERS

NUMBER

The average number of parallel servers that were requested by queued parallel statements during the 1-minute metric window

PARALLEL_SERVERS_LIMIT

NUMBER

The number of parallel servers allowed to be used by this PDB during the 1-minute metric window

SGA_BYTES

NUMBER

The current SGA usage by this PDB in bytes

BUFFER_CACHE_BYTES

NUMBER

The current usage of the buffer cache by this PDB in bytes

SHARED_POOL_BYTES

NUMBER

The current usage of the shared pool by this PDB in bytes

PGA_BYTES

NUMBER

The current PGA usage by this PDB in bytes

PLAN_NAME

VARCHAR2(30)

Resource Manager plan name

CON_ID

NUMBER

The ID of the container to which the data pertains. Possible values include:

• 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

• 1: This value is used for rows containing data that pertain to only the root

• n:

  Where n is the applicable container ID for the rows containing data