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SQL Apply Best Practices: Oracle Data Guard 10g study guide and reference

With Oracle Data Guard SQL Apply in Oracle Database 10g, Oracle is addressing the requirements of the business community for an online disaster-recovery solution that also provides a means to offload reporting and decision support operations from he primary database

This Oracle Data Guard SQL study guide describes the characteristics of SQL Apply and logical standby databases, and describes the best practices for configuring and managing them when using Oracle Database 10g Release 2.

Executive Overview4
Benefits of SQL Apply......4
Efficient Use of Standby Hardware Resources......4
Reduction in Primary Database Workload.............4
Introduction.............5
SQL Apply Enhancements...5
Oracle Database 10g Release 1 Enhancements..........5
Standby Redo Log Files5
Real-Time Apply............5
Support for Maximum Protection Mode.5
Zero Downtime Instantiation....6
Improved SQL Apply Performance.........6
Faster SQL Apply Switchover and Failover...........6
Identification of Unnecessary Log Files..6
Integration with Flashback Database to Resolve Logical Failures....6
Support for More Data Types....7
Ability to Upgrade the Oracle Database Using SQL Apply..............7
Improved Redo Data Transmission Security.........7
Oracle Database 10g Release 2 Enhancements..........7
Improved SQL Apply Performance.........7
Support for Fast-Start Failover..7
Enhanced Data Guard Statistics7
Log Writer Process Asynchronous Transport Enhancements..........7
Modified SQL Apply Parameters for Improved Manageability........8
Simpler Logical Standby Configuration with Less Tuning.8
Support for More Data Types....8
SQL Apply Best Practices.....8
Confirm Data Type Support...........9
Use Standby Redo Log Files.........10
Use Real-Time Apply......10
Consider Using a No Data Loss Protection Mode..10
Tune SQL Apply..............11
Adjust How Transactions Are Applied on the Logical Standby Database........11
Use the Standard Oracle Tuning Methodology...13
Additional Tuning Guidelines Specific to Logical Standby Databases.......14
Benefit From Improved SQL Apply Performance..14
Performance Improvement: Increasing MAX_SERVERS....16
Performance Improvement: Changing COMMIT_ORDER...16
Implement Faster SQL Apply Switchover and Failover........17
Flash Recovery Area and Standby Archived Log Files..........17
Manage Logical Standby Archived Log Files...........18
Use Fast-Start Failover....18
Use Enhanced Data Guard Management Statistics.19
Use the Asynchronous Redo Transport Enhancements........19
Conclusion..............20
Appendix A............21
Quick Reference - Upgrading from Oracle9i Database to Oracle Database 10g......21
References..............21

READ / DOWNLOAD this Oracle Data Guard SQL


Resource: http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10gR2_SQLApplyBestPractices.pdf
Posted By : Oracle Brain
On date : 09.25.09

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