1.检查oradism文件权限（下方权限是正常的）

$ cd $ORACLE_HOME/bin

$ ls -lrt oradism

-rwsr-x--- 1 root oinstall 147848 Apr 17  2019 oradism

chown root $ORACLE_HOME/bin/oradism

chmod 4750 $ORACLE_HOME/bin/oradism

2.检查数据库的优先级别：VKTM还是LMS*

set linesize 680

col Parameter for a30

col "Session Value" for a16

col "Instance Value" for a16

col "Description"  for a30

select a.ksppinm "Parameter", b.ksppstvl "Session Value", c.ksppstvl "Instance Value", a.KSPPDESC "Description"

from x$ksppi a, x$ksppcv b, x$ksppsv c

where a.indx = b.indx and a.indx = c.indx and a.ksppinm like '_%' and a.ksppinm like '_highest_priority_process%';

上面是正确的，如果不正确，更改优先级

alter system set "_high_priority_processes"='VKTM' scope=spfile;

3.检查Cgroup配置

$ ps -eaf|grep -i vktm |grep -v grep

oracle      1900       1  0 13:53 ?        00:00:00 ora_vktm_gsp

$ cat /proc/1900/cgroup | grep cpu

7:cpu,cpuacct:/user.slice

2:cpuset:/

$ ps -eaf|grep -i pmon|grep -v grep

oracle      1888       1  0 13:53 ?        00:00:00 ora_pmon_gsp

$ cat /proc/1888/cgroup | grep cpu

7:cpu,cpuacct:/user.slice

2:cpuset:/

检查发现设置显示其他路径，检查cpu.rt_runtime_us的值

# cat /sys/fs/cgroup/cpu,cpuacct/system.slice/cpu.rt_runtime_us

0

# cat /sys/fs/cgroup/cpu,cpuacct/user.slice/cpu.rt_runtime_us

0

根据官方文档其值应该为0和950000，可以使用下面命令修改，但是系统重启后，此参数设置会失效

echo 0 > /sys/fs/cgroup/cpu,cpuacct/system.slice/cpu.rt_runtime_us

echo 950000 > /sys/fs/cgroup/cpu,cpuacct/user.slice/cpu.rt_runtime_us

永久生效（在cgconfig.conf中设置）

Install libcgroup-tools* on the system. (You can find this package on OL7 latest repository)

# yum install libcgroup-tools

/etc/cgconfig.conf will be created automatically when you start cgconfig service

# systemctl start cgconfig

Edit /etc/cgconfig.conf with user.slice parameter below.

group user.slice {

cpu {

cpu.rt_period_us = 1000000;

cpu.rt_runtime_us = 950000;

}

}

Restart cgfconfig service so the value will take effect.

# systemctl restart cgconfig

Enable cgconfig so it will take effect during reboot.

#systemctl enable cgconfig

Reboot the server and check the value if it is now persistent.

重启实例