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关于Oracle RAC后台进程
orastar2020-03-03 10:38:01
The GCS and GES processes, and the GRD collaborate to enable Cache Fusion. The Oracle RAC processes and their identifiers are as follows:
GCS和GES进程,GRD协作启用缓存融合(Cache Fusion)。Oracle RAC进程及其标识符如下所示:

ACMS: Atomic Controlfile to Memory Service (ACMS) 原子控制文件到内存服务(ACMS)
In an Oracle RAC environment, the ACMS per-instance process is an agent that contributes to ensuring a distributed SGA memory update is either globally committed on success or globally aborted if a failure occurs.
在Oracle RAC环境中,ACMS每个实例进程是一个代理,有助于确保分布式SGA内存更新在成功时全局提交,如果发生故障,则全局中止。

GTX0-j: Global Transaction Process 全局事务进程
The GTX0-j process provides transparent support for XA global transactions in an Oracle RAC environment. The database autotunes the number of these processes based on the workload of XA global transactions.
该GTX0-j进程为Oracle RAC环境中的XA全局事务提供支持。数据库根据XA全局事务的工作负载自动调整这些进程的数量。

LMON: Global Enqueue Service Monitor 全局队列服务监控
The LMON process monitors global enqueues and resources across the cluster and performs global enqueue recovery operations.
该LMON进程监视集群中的全局队列和资源,并执行全局队列恢复操作。

LMD: Global Enqueue Service Daemon 全局队列服务守护进程
The LMD process manages incoming remote resource requests within each instance.
该LMD进程在每个实例中管理传入的远程资源请求。

LMS: Global Cache Service Process 全局缓存服务进程
The LMS process maintains records of the data file statuses and each cached block by recording information in a Global Resource Directory (GRD). The LMS process also controls the flow of messages to remote instances and manages global data block access and transmits block images between the buffer caches of different instances. This processing is part of the Cache Fusion feature.
该LMS进程通过在全局资源目录(GRD)中记录信息来维护数据文件状态和每个缓存块的记录。该LMS过程还控制向远程实例的消息流,并管理全局数据块访问,并在不同实例的缓冲区高速缓存之间传输块映像。此处理是缓存融合功能的一部分。

LCK0: Instance Enqueue Process 实例队列进程
The LCK0 process manages non-Cache Fusion resource requests such as library and row cache requests.
该LCK0进程管理非缓存融合资源请求,如库和行缓存请求。

RMSn: Oracle RAC Management Processes (RMSn)  Oracle RAC管理进程(RMSn)
The RMSn processes perform manageability tasks for Oracle RAC. Tasks accomplished by an RMSn process include creation of resources related to Oracle RAC when new instances are added to the clusters.
这些RMSn进程为Oracle RAC执行可管理性任务。通过RMSn流程完成的任务包括在将新实例添加到集群时创建与Oracle RAC相关的资源。

RSMN: Remote Slave Monitor manages background slave process creation and communication on remote instances. These background slave processes perform tasks on behalf of a coordinating process running in another instance.
远程从属监视器管理远程实例上的后台从属进程创建和通信。这些后台从属进程代表在另一个实例中运行的协调进程执行任务。
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