Oracle Maximum Availability Architecture and Exadata – a tour de force with Michael Nowak
Michael Nowak joins Cris Pedregal for an informal chat about Maximum Availability Architecture in the context of Exadata.
Highlights:
0:12 Welcome & Michael Nowak introduction
0:14 Section: Exadata MAA overview
0:22 Cost of Downtime and the importance of high availability (HA)
1:18 What is Maximum Availability Architecture (MAA)
3:07 What is MAA: MAA tiers
4:43 Exadata built from the ground up for HA
5:24 10 years of Exadata
5:51 Exadata’s Exachk origin
7:09 Section: Unplanned outages topics
7:13 X7 Do-not-service LED on Exadata storage server
10:27 X7 M.2 Drive Fast Failure Protection
13:00 Database tier I/O cancellation
15:56 Smart OLTP Caching
19:14 Smart Rebalancing for high redundancy diskgroups
22:39 Section: New HA Features and Improvements
22:45 Fast Node Death detection
24:06 What is a Disaster? and Data Guard Standby
26:58 Standby metrics: Redo apply rates, detection and fast-start failover
28:25 Section: Planned maintenance topics
28:28 video demo: database node update using patch manager tool
30:57 video demo: Exadata online storage expansion using OEDACLI tool
34:16 Adding storage: Exadata AWR showing outlier detection and how cells cache data
37:14 Exadata MAA evolution & direction
38:26 Q&A Section
38:29 Q: Single Exadata rack HA? A: Rack full of redundancy, we don't see rack failures
39:46 Q: What are the toughest problems you confront in HA? A: Sick/misbehaving components that don't meet their own service levels (as opposed to fail-stop components) Hard to diagnose, e.g., take disk offline and diagnose via ORION.
42:18 Q: How do you find out that MAA is working well? A: IDC's 5-nines, customer that reports 5 years of operation without issues
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