环境是Centos6.9+11.2.0.4.180417上，存在VKRM的trace文件，内容如下

*** 2019-03-03 06:00:00.135
*** SESSION ID:(1291.44003) 2019-03-03 06:00:00.135
*** CLIENT ID:() 2019-03-03 06:00:00.135
*** SERVICE NAME:(SYS$BACKGROUND) 2019-03-03 06:00:00.135
*** MODULE NAME:() 2019-03-03 06:00:00.135
*** ACTION NAME:() 2019-03-03 06:00:00.135

VKRM scheduling interval:(10)ms
VKRM uses high resolution time: last active time=(1551549600010253) current time=(1551564000135405)
_history_rest_time=(10)sec

*** 2019-03-04 02:00:00.021
VKRM ends at (1551636000020685)

该问题在MOS上找到文档，提示说在11.2.0.3版本上已修复

Patch suggestions for Bug:9382956
You have indicated that you are on 11.2.0.4 (Server Patch Set) *but* this bug is marked as fixed in 11.2.0.3 (Server Patch Set) onwards.
ie: It looks like you already have the fix for this bug.
Due to this I cannot suggest any patch options.
Please review Bug:9382956 and re-check details of the problem.

理论上，可以通过以下修复该问题
Patch 9382956: VKRM TRACE FILES GENERATED WHEN RESOURCE MANAGER PLAN IS CLEARED

该问题，现未影响到生产运行，没有打该补丁