
Oracle White Paper Zero-Downtime Database Upgrades Using Oracle GoldenGate
Executive Overview ........................................................................... 1
Goals ................................................................................................. 2
Concepts and Terminology ................................................................ 2
Source and Target ......................................................................... 2
Oracle GoldenGate ........................................................................ 2
Database Upgrade Options ........................................................... 3
Database Migration ....................................................................... 3
Standby Database ......................................................................... 4
Transportable Tablespace ............................................................. 4
Cross-Platform Transportable Tablespace..................................... 4
Clone Database ............................................................................. 4
Oracle Recovery Manager ............................................................. 5
Upgrade and Migration Challenges ................................................... 5
Revenue Impact ............................................................................ 5
Customer Expectations and Loyalty............................................... 5
Interdependencies and Business Reputation ................................. 6
Instantiation ................................................................................... 6
Incremental Data Movement .......................................................... 7
Performance Impact ...................................................................... 8
Staging Areas ................................................................................ 8
Change Management .................................................................... 8
Special Handling of Legacy Data or Certain Datatypes.................. 8
Verification ..................................................................................... 8
Failback ......................................................................................... 8
Achieving Zero-Downtime with Oracle GoldenGate ........................... 8
Overview of Oracle GoldenGate Architecture .................................... 9
Capture ....................................................................................... 10
Trail Files ..................................................................................... 10
Delivery ....................................................................................... 10
Oracle GoldenGate Veridata........................................................ 11
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