ITPub博客

首页 > 数据库 > Oracle > Oracle VKRM 后台进程介绍

Oracle VKRM 后台进程介绍

原创 Oracle 作者:feelpurple 时间:2015-12-21 22:30:44 0 删除 编辑
有好几次重启 Oracle 11g 数据库,在告警日志中,都会发现在数据库关闭和开启的最后一步,都会出现 VKRM 这个后台进程,于是就去文档中查了一下这个进程的说明。

alert 中关闭数据库的记录

ARC1: Archival stopped
Thread 1 closed at log sequence 14797
Successful close of redo thread 1
Mon Dec 21 21:59:03 2015
Completed: ALTER DATABASE CLOSE NORMAL
ALTER DATABASE DISMOUNT
Shutting down archive processes
Archiving is disabled
Completed: ALTER DATABASE DISMOUNT
ARCH: Archival disabled due to shutdown: 1089
Shutting down archive processes
Archiving is disabled
ARCH: Archival disabled due to shutdown: 1089
Shutting down archive processes
Archiving is disabled
Mon Dec 21 21:59:04 2015
Stopping background process VKTM
Mon Dec 21 21:59:24 2015
Instance shutdown complete

alert 中启动数据库的记录

Starting background process CJQ0
Mon Dec 21 22:13:01 2015
CJQ0 started with pid=59, OS id=8663
Setting Resource Manager plan SCHEDULER[0x3189]:DEFAULT_MAINTENANCE_PLAN via scheduler window
Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter
Mon Dec 21 22:13:05 2015
Starting background process VKRM
Mon Dec 21 22:13:05 2015
VKRM started with pid=73, OS id=8711

官方文档中的说明如下:

VKRM

Virtual Scheduler for Resource Manager Process

Serves as centralized scheduler for Resource Manager activity

VKRM manages the CPU scheduling for all managed Oracle processes. The process schedules managed processes in accordance with an active resource plan.

Database instance


这个进程主要负责 Resource Manager ,配合资源计划,为 Oracle所有的进程分配 CPU 资源。

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/26506993/viewspace-1876466/,如需转载,请注明出处,否则将追究法律责任。

请登录后发表评论 登录
全部评论

注册时间:2014-08-01

  • 博文量
    404
  • 访问量
    1190079