Efficient business operations, high-quality customer service, conformity to government regulations, and safeguarding corporate information assets all require the highest possible level of data protection and data availability. Traditional data protection and disaster recovery (DR) solutions have proven unable to deliver aggressive recovery objectives. Read this white paper to learn about a unique data protection and recovery solution that provides the management, monitoring, and automation software to create synchronized standby databases that protect data from failures, disasters, errors, and corruptions, while addressing both the high availability and disaster recovery requirements of today's demanding business environment.
An Oracle Technical White Paper September 2009
Oracle Data Guard with
Oracle Database 11g Release 2
Oracle White Paper- Oracle Data Guard with Oracle Database 11g Release 2
Introduction ......................................................................................... 1
Oracle Data Guard 11g - Overview..................................................... 2
How Data Guard Works - Technical Details....................................... 4
Data Guard Transport Services ...................................................... 4
Protection Modes ............................................................................ 5
Data Guard Apply Services............................................................. 6
Automatic Gap Resolution .............................................................. 8
Oracle Data Validation .................................................................... 9
Managing a Data Guard Configuration ........................................... 9
Role Management Services .......................................................... 10
Addressing Planned Maintenance ................................................ 12
Data Guard Compared to Remote-Mirroring..................................... 13
Data Guard and Exadata .................................................................. 14
Data Guard and Oracle Real Application Clusters............................ 14
Maximum Availability Architecture .................................................... 14
Data Guard Customers ..................................................................... 15
Conclusion ........................................................................................ 15
Appendix: Summary of Data Guard 11g New Features.................... 16 Oracle White Paper- Oracle Data Guard with Oracle Database 11g Release 2
Introduction Efficient business operations, high quality customer service, conformance with government regulations, and safeguarding corporate information assets all require the highest possible level of data protection and data availability. Thus it is no surprise that data protection and data availability are among the top priorities for companies of all sizes and industries.
Backup and recovery from tape, storage remote-mirroring, or database log shipping are the traditional data protection and disaster recovery (DR) solutions. Unfortunately, these solutions are unable to reliably deliver aggressive recovery point (RPO - data protection) and recovery time (RTO - data availability) objectives. They also fail to provide an adequate return on investment due to high acquisition costs and poor utilization of standby systems that sit idle until they are called upon to assume a primary role.
In contrast, Oracle Data Guard 11g Release 2 redefines what users should expect from such solutions. Data Guard is included with Oracle Database Enterprise Edition and provides the management, monitoring, and automation software to create and maintain one or more synchronized standby databases that protect data from failures, disasters, errors, and corruptions. It can address both High Availability and Disaster Recovery requirements and is the ideal complement to Oracle Real Application Clusters.
Data Guard has the requisite knowledge of the Oracle database to provide the highest level of protection for Oracle data. Data Guard is straightforward to implement and manage. Administrators are always certain of the ability of a standby database to assume the production role - eliminating business risk at failover time. Finally, in a time when all businesses must reduce expenses, Data Guard standby databases deliver high return on investment when used for queries, reports, backups, testing, or rolling database upgrades and other maintenance, while also providing disaster protection.
1Oracle White Paper- Oracle Data Guard with Oracle Database 11g Release 2
"Active Data Guard 11g is a quick win! We easily dual-purposed our ten terabyte standby database for both disaster protection and secure read-only access for our public-facing eCommerce applications. We were happy to discover after much effort evaluating other alternatives, that utilizing our existing Data Guard standby database was the simplest solut... [download for more]
