Oracle Cloud is Best for Oracle Database - High Availability

Oracle Cloud is Best for Oracle Database
High Availability
Markus Michalewicz
Senior Director of Product Management
Oracle Database High Availability | Scalability | MAA
December 7, 2020
@KnownAsMarkus
www.linkedin.com/in/markusmichalewicz
www.slideshare.net/MarkusMichalewicz

What Analysts Say
https://www.oracle.com/database/solutions/kuppingercole-database-compass/
Copyright © 2020, Oracle and/or its affiliates2

Oracle Autonomous Database is positioned #1 for all
four Operational Use Cases, and #1 or #2 for all four
Analytical Use Cases in 2020 Gartner Critical
Capabilities for Cloud DBMS Reports
Source: Gartner Critical Capabilities for Cloud DBMS for Operational Use Cases, Merv Adrian, Donald Feinberg, Rick Greenwald, Adam Ronthal, Henry and Gartner Critical Capabilities for
Cloud DBMS for Analytical Use Cases, Henry Cook, Donald Feinberg, Merv Adrian, Rick Greenwald, Adam Ronthal, November 2020 The Gartner documents are available upon request
from Oracle. Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the
highest ratings of other designation. Gartner research publications consist of the opinions of Gartner’s research organization and should not be construed as statements of fact. Gartner
disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.

Customer Examples - https://www.oracle.com/customers/

Top 10 Reasons to Adopt Oracle Cloud
https://www.oracle.com/a/ocom/docs/oracle-cloud-infrastructure-ten-reasons.pdf
Copyright © 2020, Oracle and/or its affiliates
1 Oracle delivers a second-generation cloud.
2 Oracle Cloud supports your long-term plans.
3 Capabilities to optimize performance.
4 Defense in-depth.
5 Optimized for Oracle workloads.
6 Get comprehensive support for app development.
7 Maximized price/performance.
8 Oracle Cloud outperforms AWS.
9 Oracle Cloud supports SMB growth.
10 Strategic integrations with global infrastructure leaders.
5

Oracle Delivers Second-Generation Cloud – Best for Database Workload
Oracle Cloud Infrastructure (OCI) – built on a sound Foundation for Enterprise Customers
Predictable Performance
with no noisy neighbors
Fast & predictable physical
Network Infrastructure
Defense in-depth
High Availability
Building Blocks
6 Copyright © 2020, Oracle and/or its affiliates

Why is OCI the Best Cloud to Run Oracle Database?
Unique capabilities for running Oracle Database on OCI
Oracle Real Application
Clusters (RAC)
Oracle Exadata
Autonomous Database
Configured following Best
Practices for Workload
Optimiziation

Predictable Performance with No Noisy Neighbors
OCI’s capability to optimize performance overall
In OCI, the VM is your “own”
• VM CPUs are not shared
• Memory is not overprovisioned
• Network is dedicated
Workload performance is always the same

Fast & Predictable Physical Network Infrastructure
OCI’s capability to optimize network and storage performance
• Non-oversubscribed network
• Flat network speeds traffic
• by reducing switches between any two hosts
• High speed interconnects
• 2 x 25Gbps bandwidth
• Predictable, low latency
• < 100μs one-way latency between hosts
within an AD; <500μs between Ads
- Latency further reduced on Exadata
• The only cloud network with performance SLA
Throughput IOPS
480 KBPS / GB
Up to 320
MBPS
60 IOPS / GB
Up to 25,000
IOPS
9

Defense In-Depth
https://www.oracle.com/technetwork/database/security/wp-security-dbsec-cloud-3225125.pdf
Oracle’s approach to data security in the cloud:
• Security should be always-on
• Data in-transit to database services is encrypt using
database-native network encryption.
• Data at-rest in database services is encrypted using
Transparent Data Encryption (TDE).
• Master encryption keys used for encrypting data are
stored in a per-database wallet.
• Security should be pushed down the stack
• Customers should have control over the data
• Policies should be same on-prem & the Cloud
https://www.oracle.com/security/cloud-security-threat-protection

High Availability Building Blocks
OCI’s capability to provide best-in-class failure isolation
• Regions serve different geographies and build the basis for Disaster Recovery
• Availability Domains (AD) provide a High Availability foundation within a Region
• The represent fault-de-correlated data centers
• Fault Domains (FD) are a logical grouping of hardware & infrastructure within an Availability Domain
• FDs provide isolation within ADs, ensure maintenance will only affect 1 FD in a given AD

Oracle Cloud Database Services – Designed Around Oracle Database
Infrastructure as a Service (IaaS) any cloud vs. Database as a Service (DBaaS) in OCI
Function IaaS
(any cloud)
DBaaS (VM)
Console Support for Patching Manual ✅
• Backup / Restore Manual ✅
• Data Guard Manual ✅
HC-Compression (HCC) ❌ ✅
In-Memory Data Guard ❌ ✅
Enterprise Edition with EM Mgmt
Packs included at no extra charge ❌ ✅
BYOL ✅ ✅
RAC Support ❌ ✅
Online CPU Scaling ❌ ✅
Online Storage Scaling ✅ ✅
ACFS Support for Databases ❌ ✅
Infrastructure alone cannot ensure database (DB)
High Availability (HA) on any cloud.
Oracle Database Cloud Services provide
• the DB availability and flexibility customers are
used to from running Oracle Databases on-
premises
• Exadata Cloud Service (ExaCS) and
Autonomous Database add additional
functionality to increase Database HA
12

Why Oracle Cloud Database Services?
Enterprise customers moving to the cloud require the same
• Performance
• Security
• High Availability
as for their on-premises deployments.
• Availability of cloud databases cannot be provided by the cloud infrastructure alone
• Highest levels of availability depend on database High Availability (HA) capabilities
• Oracle Cloud Database Services are engineered to expose the full capabilities of Oracle Database
• Oracle Database on Oracle Cloud provides the highest availability of any cloud database

Oracle Cloud Database Services
Optimized for Oracle Database Workloads of any type and size, scaling included
IaaS Database - VM Autonomous Exadata (ExaCS)
Editions BYOL SE2, EE, HP*, EP** N/A EP**
Implementation
Up to
customer
1 Dedicated CDB Serverless / Dedicated 1+ Dedicated DBs
Management Customer Co-Managed Oracle Co-Managed
Max DB size 1024 TB 40 TB 479 TB
25000 TB with HCC
2500 TB uncompressed
CPU range 1 – 64 cores 1 – 48 DB cores 1 – 400 DB cores 1 – 1600 DB cores
Storage
Block: Elastic
per GB
Block: Elastic per GB Exadata,Flash: Elastic Exadata,Flash: Elastic
*HP = High Performance ** EP = Extreme Performance
ExaCS runs all workloads
• Compute intensive
• Memory intensive
• Latency intensive
• IO intensive
• Storage intensive
ExaCS scales
• CPU 25x more
• Storage 20x more
than AWS RDS and Aurora
15

Oracle Maximum Availability Architecture (MAA)
Reference
Architectures
Deployment Choices
HA Features,
Configurations &
Operational
Practices
Customer Insights &
Expert Recommendations
Production Site Replicated Site
Platinum
Gold
Silver
Bronze
Replication
Data Protection
Flashback RMAN + ZDLRA
Continuous Availability
Application
Continuity
Global Data
Services
Generic
Systems
Engineered
Systems
DBCS
ExaCS/ExaCC
Autonomous DB
Active Replication
Active Data Guard GoldenGate
Scale Out
RAC ShardingASM
16

Maximum Availability Architecture (MAA)
The fundamentals
1. Database-aware HA architecture for any platform and application
2. Architecture and best practices
3. Deployed widely as a standard by Oracle customers world-wide
4. Integrated with Oracle Engineered Systems (Exadata)
http://www.oracle.com/goto/maa
24X7

Data Failures Happen
With increasing data volume and complex IO subsystems, data failures are inevitable
Storage Systems have known issues:
• Schroeder and Gibson,
Disk Failures in the Real World: What Does an MTTF of 1,000,000 Hours Mean to You?, 2007
• Krioukov, et al, Parity Lost and Parity Regained, 2008
• Bairavasundaram, et al, An Analysis of Data Corruption in the Storage Stack, 2008
• Jiang, et al, Are Disks the Dominant Contributor for Storage Failures?, 2008
• Zheng, et al, Understanding the Robustness of SSDs under Power Fault, 2013
• InfoWorld Tech Watch, Test your SSDs or risk massive data loss, researchers warn, 2013
More insidious than outright failures are latent data corruptions

Examples of Physical Data Corruption
• Latent sector error, corruption, lost write, torn write, misdirected write Krioukov, et al, Parity Lost and Parity
Regained, FAST ’08: 6th USENIX Conference on File and Storage Technologies, 2008
Oracle
Before Good Write
Oracle
Corrupted Write
Oracle
Wrong-location Write
Oracle
Lost Write
Oracle

Logical Replication to Prevent Corruptions
Storage and OS-level replication copies bits without understanding what they mean
• If the primary copy of the data is corrupted,
the corruption is guaranteed to be propagated to the replicas
Active Data Guard uses logical (redo based) replication
• Ships changes with well-defined structure and contents that can be verified
• Can prevent a corruption from being propagated
• Detects lost writes! Reads from storage are logged along with their versions.
- Version validated on Standby
• Data Guard also recovers logically or physically corrupted blocks on primary by retrieving from standby
Oracle detects and warns about a bad change (redo) without corrupting the data:
ORA-00600: internal error code, arguments: [3020],..
ORA-10567: Redo is inconsistent with data block (file# 4, block# 315)
ORA-10564: tablespace TRANS1
ORA-01110: data file 4: 'O:ORADATATBS01.DBF‘

Oracle Cloud for Best-in-Class Oracle Database Availability
Full active-active MAA
support: RAC, ADG, etc.
Integrated middle-tier notification
and
Application Continuity
Exadata for end-to-end data
protection
21

and
protection
22

Oracle’s validated Maximum Availability Architecture (MAA)
Reference
Architectures
MAA with Exadata for
ultimate protection
Customer Insights &
Expert Recommendations
Production Site Replicated Site
Replication
Data Protection
Flashback RMAN + ZDLRA
Continuous Availability
Application
Continuity
Global Data
Services
Active Replication
Active Data Guard GoldenGate
Scale Out
RAC ShardingASM
HA Features,
Configurations
& Operational
Practices
23

Automating and Optimizing Database Infrastructure
Engineered Systems provide a differentiated platform to build upon
• Smart Scan
• Infiniband Scale-Out
• Database Aware Flash Cache
• Storage Indexes
• Hybrid Columnar Data
• IO Priorities
• Data Mining Offload
• Offload Decryption
• Direct-to-wire Protocol
• JSON and XML offload
• Instant failure detection
• Network Resource Mgmt
• Prioritized File Recovery
• In-Memory Columnar in Flash
• Smart Fusion Block Transfer
• Exadata Cloud Service
2008
2018
2020

Exadata Optimized for MAA
Protects Servers and Data
Exadata has integrated server, storage, networking, and smart storage software
Unlike conventional servers, Exadata offers unique capabilities
• to detect and prevent corruptions and handle other storage issues
• more effective than separate server + storage configurations
Smart storage software understanding Oracle block formats enables corruption detection & prevention.
• Database block integrity checked before/after writing to disk (HARD)
• Lost write detection through end-to-end block version tracking
Database to smart storage software work together to make end-to-end operations more fault tolerant
• E.g. IO latency capping, fast node death detection, …
• Many performance optimizations that make MAA work better than conventional servers

and
protection
26

Active-Active Architecture
Traditional availability technologies require idle spares
• Cold failover clusters, passive disaster recovery sites
This is uneconomical.
Starting with a cold system leads to connection storms and cold caches
that cause many minutes of extremely slow performance
Worse, it is unreliable
• Uncertain if the backup system will work when you need it
• Customers are afraid to use their disaster recovery sites
• Have you ever checked the air pressure of your spare tire?
Oracle MAA is designed to be Active-Active
• RAC, Active Data Guard, GoldenGate

Active-Active Clustering
In Oracle Cloud, active-active clustering is achieved using
Oracle Real Application Clusters (RAC), which enables:
• Scalability by actively using resources across multiple nodes
• Rapid and transparent recovery from node and instance failures
Oracle RAC is unique to Oracle Database and Oracle Cloud!
Only Oracle Cloud has the fast and predictable storage and network
infrastructure to support Oracle RAC.

Oracle RAC Simplifies Maintenance
Planned maintenance is a major pain point for customers
• Due to security patching, maintenance is very frequent
Oracle RAC greatly simplifies planned maintenance.
1. RAC easily relocates workloads in the cluster over time without disruption
• Waits until connection or operation completes, then moves session
• Draining workloads before patching takes many minutes to hours
- Active-Active clusters required to avoid disrupting applications
2. Zero downtime and zero disruption Rolling Patching Support
• Truly transparent to applications and users
Also used for patching of OS, hypervisor, firmware and relocating workloads

RAC Zero Downtime and Zero Disruption Rolling Patching Support
Starting with Oracle Database 18c a release lifecycle includes:
• Base release – e.g. 19.3
• Release Updates (RU) – e.g. 19.6
- Rolling Patching -enabled in RAC
• Release Update Revisions (RUR)
- Rolling Patching -enabled in RAC
• OneOff patches, minor patches as needed
- Rolling Patching -enabled in RAC*
• RAC supports Zero Downtime and Zero Disruption Rolling Patching
for all patches within a given release – e.g. Oracle Database 19c

and
protection
31

Integrated Middle-Tier Notification
Migrating or creating applications for Oracle Cloud
• Does not require any application code changes
• Sends out notifications for:
• Addition of nodes and services
• Component failures (instance, service, etc.)
• Instance utilization and performance metrics
Enables the connection pool to react immediately
• Reducing application related brownouts
• Waiting for timeouts on failures creates stall
Connection
Pool
32

Protect your applications from any interruption
Application outage protection
• For planned & unplanned outages
• System outage protection alone does not
ensure applications are uninterrupted
• Application Continuity preserves session state &
replays in-flight database transactions and reads
• 99% of applications cannot gracefully
handle failures
• 100% transparent to the users and
applications – fully automatic
• Unique to Oracle!
• Available with Oracle RAC and Active Data Guard
• Default on Oracle Autonomous Database

Key Takeaway & Summary

Oracle Cloud – the only Cloud with full Maximum Availability Architecture
Capability Benefits
Oracle
Cloud
BYOL to Other
Cloud
Platforms
Database MAA
Architecture for protecting Oracle Databases
during planned and unplanned outages ✘
Active Data Guard
(ADG)
Enable production Oracle Databases to survive
disasters and data corruptions
Exadata
Infrastructure
Hardware and software engineered to achieve the
lowest brownout, HA and data protection ✘
Active / Active
Clustering (RAC)
Maximize availability, add horizontal scalability and
zero downtime patching ✘
Integrated
Middle-Tier
Notification
Proactively notify middle-tier about changes in the
cluster (failures, performance metrics) to minimize
application related brownouts
✘
Application
Continuity
Continue reads and replay in-flight database
transactions for continuous availability ✘
Only Cloud with
• Oracle RAC
• Exadata
• Zero disruption maintenance
• Middle-tier notification
• Application Continuity
35

Thank you
Markus Michalewicz (Markus.Michalewicz@oracle.com)
Senior Director of Product Management
@KnownAsMarkus
www.linkedin.com/in/markusmichalewicz
www.slideshare.net/MarkusMichalewicz

Our mission is to help people
see data in new ways, discover insights,
unlock endless possibilities.

Oracle Cloud is Best for Oracle Database - High Availability

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Similar to Oracle Cloud is Best for Oracle Database - High Availability

Similar to Oracle Cloud is Best for Oracle Database - High Availability (20)

More from Markus Michalewicz

More from Markus Michalewicz (19)

Recently uploaded

Recently uploaded (20)

Oracle Cloud is Best for Oracle Database - High Availability