Maa in database12c

Oracle Maximum Availability
Architecture Best Practices
for Database 12c
Laban Ndwaru,
Presales Consultant, Oracle.

Maximum Availability Architecture (MAA)
• Oracle Maximum Availability Architecture (MAA) is Oracle’s best
practices blueprint based on the integrated suite of Oracle’s
best-of-breed High Availability (HA) technologies
• HA capabilities address the full range of planned and
unplanned outages

• Prevent outages before they occur.
• Tolerate outages - planned or unplanned so
they are transparent to the business.
• Recover quickly if an outage does occur.
Achieving High Availability

Causes of outages

• RAC- Oracle Real Application Clusters
• Oracle Data Guard
• ASM-Automatic Storage Management
• Oracle Enterprise Manager
• RMAN- Recovery Management
Oracle High Availability Technologies

Online Redefinition,
Edition-based Redefinition,
Data Guard, GoldenGate
– Minimal downtime maintenance,
upgrades, and migrations
Production Site
RAC
– Scalability
– Server HA
Flashback
– Human error
correction
Active Data Guard
– Data Protection, DR
– Query Offload
GoldenGate
– Active-active
– Heterogeneous
– Migrations and Upgrades
Active Replica
Fig. Integrated deployment of Oracle HA
Oracle Secure Backup
– Backup to tape / cloud
ASM
– Volume Management
RMAN & Fast Recovery Area
– On-disk backups

Oracle Real Application Clusters
• RAC is a shared cache clustered database
architecture that overcomes the limitations
of traditional shared-nothing and shared-
disk architectures

RAC- Features
 Application Continuity
 Oracle Grid Infrastructure Integration
 Full Oracle Multitenant Support

RAC- Key Benefits
Fast Failover
Protection from local site system failures
Faster than cold cluster failover solution
Fast-start fault recovery
Availability and Accessibility
Allows for scheduled outages
Add and remove nodes transparently
Transparent Application Failover (TAF) provides uninterrupted
service

Higher Scalability
All system resources from all nodes are leveraged
Cache fusion eliminates need to partition data or modify the
application – fully application transparent
Connection load balancing distributes connection requests from
application tier
Manageability
Provides a single image of the database to manage
RAC- Key Benefits

Oracle Active Data Guard
• Active Data Guard provides the management,
monitoring, and automation software to create and
maintain one or more synchronized replicas (standby
databases) of a production database (primary
database).

Oracle Active Data Guard –Key Features & Benefits
• Protection
Oracle corruption-detection checks ensure that data is
logically and physically consistent before it is applied to a
standby database
• Availability
An Active DataGuard standby provides high availability by
quickly transitioning to the secondary role, either manually or
automatically, preventing downtime and data loss
• Return on Investment
Active DataGuard puts idle systems to work improving
systems utilization

Oracle Active Data Guard –Key Features & Benefits
• Performance
It is the only replication technology able to support the very
high volumes driven by the Oracle Database Machine and
Oracle Exadata
• Confidence
Provides unique levels of simplicity, performance, reliability
and the security of having an independent, exact replica of
the production database

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Maa in database12c

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