5
RAC
学习
目录
RAC
学习
.............................................................................................................................................1
1.
基本概念
...........................................................................................................................................7
1.1.
主要后台进程
.........................................................................................................................7
1.1.1. LMDn:
共享访问进程
Global Enqueue Service Daemon...........................................7
1.1.2. LCK0: Instance Enqueue Process.................................................................................8
1.1.3. LMON:LOCK Monitor Processes
或
Global Enqueue Service Monitor
。
.................8
1.1.4. LMSn: Global Cache Service Process
也称作
GCS
（
Global Cache
Services
）
processes................................................................................................................9
1.1.5. DIAG: Diagnostic Capture Process............................................................................10
1.1.6. RBAL
：
ASM Rebalance Master Process..................................................................10
1.1.7. ASMB: ASM Background Process.............................................................................11
1.1.8. PING
：
Interconnect Latency Measurement Process.................................................12
1.1.9. LMHB: Global Cache/Enqueue Service Heartbeat Monitor......................................12
1.1.10. RMSn
：
Oracle RAC Management Process.............................................................12
1.1.11. RSMN: Remote Slave Monitor Process....................................................................13
1.1.12. GTXn: Global Transaction Process..........................................................................13
1.1.13. RCBG: Result Cache Background Process...............................................................13
1.1.14. ACMS: Atomic Control File to Memory Service Process........................................13
1.1.15.
数据库后台进程（
Database Background Processes
）：
.......................................13
1.2.
单实例组件与
RAC
组件对比
.............................................................................................13
1.3. OCR
、
voting disk
的作用
....................................................................................................14
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