What Is Oracle 11g Cpu Usage And How To Fix It?

Remember that the maximum utilization of each consumer group in a resource plan is only proportional to the total CPUs to reach the instance specified by CPU_COUNT . If the capped consumer group is capped at 50% of the total CPU and your CPU_COUNT is set to 2, their capped consumer group is capped at 1 CPU. Keep this in mind when using plans from reference books that track CPU utilization for the entire instance.

Define CPU_COUNT

Remember that on multi-threaded systems, CPU_COUNT binds threads, not cores.

If Resource Manager is active, you must provide a default CPU_COUNT for each instance running on one of the servers. The CPU_COUNT parameter is dynamic, but it is not recommended for an application to change it to run frequently or too efficiently. The following command shows how to package a parameter.

on the old system, cpu_count is defined to be 2;

Determining the parameter is simple, but betterIt’s best to start with what you need to know about the steps involved in setting it up. There are two simple and easy approaches:

• Over-provisioning: In each case, CPU_COUNT is set to a value less than the total number of processors on the server, and this also results in a value far exceeding the number of processors on the host server. … This prevents one instance from using the entire CPU of its server, but if all the hours are busy at the same time, our own server may still be overloaded.
• Split: The sum of the CPU_COUNT values ​​for each individual instance on the server is a number less than or equal to the maximum number of processors on the server. On this journey, it is so unlikely that such an example will impact the performance of an instance in terms of CPU.

The following diagram shows an example of deployment methods on a server with 4 threads available to process the database.

CPU_COUNT may change, for example, to indicate comparable performance requirements.

Head Of The Accelerator Department

The Resource Manager effect can be displayed in the CONSUMED_CPU_TIME and CPU_WAIT_TIME columns of the following views.

• V $ RSRC_CONSUMER_GROUP
• V $ RSRCMGRMETRIC_HISTORY

CONSUMED_CPU_TIME was always the number of milliseconds of the CPU tag used by the consumer group, while CPU_WAIT_TIME was the time that was due to the resource manager waiting for CPU limit.

Select name, Consumed_cpu_time, cpu_wait_timefrom v $ rsrc_consumer_group;NAME CONSUMED_CPU_TIME CPU_WAIT_TIME——————————– —————– – ————SYS_GROUP 45 155 226OTHER_GROUPS 310 4ORA $ AUTOTASK_MEDIUM_GROUP 23805 864ORA $ AUTOTASK_URGENT_GROUP 3777 17OPA $ AUTOTASK_STATS_GROUP 7 0OPA $ AUTOTASK_SPACE_GROUP 0 0OPA $ AUTOTASK_SQL_GROUP 0 0OPA $ AUTOTASK_HEALTH_GROUP 0 0ORA $ DIAGNOSTICS 425 13_ORACLE_BACKGROUND_GROUP_ 9 0Selected 10 lines.SQL>change session set nls_date_format = ‘DD-MON-YYYY HH24: MI: SS’;Line size 100.adjustselect begin_time, consumer_name, cpu_consumed_time, cpu_wait_timefrom v $ rsrcmgrmetric_historycommand only until begin_time;BEGIN_TIME CONSUMER_GROUP_NAME CPU_CONSUMED_TIME CPU_WAIT_TIME——– —————————————— – —– ————-………03-NOV-2012 14: 31: 2 0ORA $ AUTOTASK_HEALTH_GROUP0 003-NOV-2012 14: 31: 2 0 DIAGNOSTICS $ 0 003-NOV-2012 14: 31: 2 0ORA $ AUTOTASK_STATS_GROUP 0 003-NOV-2012 14: 32: 2 0SYS_GROUP 515 003-NOV-2012 14: 32: 2 0OTHER_GROUPES 3 003-NOV-2012 14:32: 2 0ORA $ AUTOT

Finley King