Background Knowledge: SAP DB 7.4
Log Concept
Log Entry
Redo Log Entry
Undo Log Entry
Online Logging
Redo Log Management
Log Queue
Log Page
Log Writer
Activating or Deactivating Redo Log Management
Undo Log Management
Undo Log File
History Management
History File
History List
Garbage Collector
Restart or Recovery
Redo Log Manager
Log Reader
Redo Log File
Redo List
Redo Task
Savepoint on Restart
Example: Restart
Transaction File
Transaction List
Data Management Using B* Trees
Concepts
Primary Key
Secondary Key
B* Tree
Root/Index Page
Leaf Page
Table Access
Table ID
B* Trees for Tables
B* Trees for Table with LONG Columns
B* Trees for Tables with Secondary Key
B* Trees for Tables with LONG Columns and Secondary Key
Table Access Using B* Tree
Table Access (SELECT) Using B* Tree
Table Access (INSERT) Using B* Tree
Table Access (DELETE) Using B* Tree
Table Access (UPDATE) Using B* Tree
Changes in the B* Tree Structure
Non-Uniform Distributions of Data Pages
Creating a Homogeneous System Copy
Operating System Compatibility for Homogeneous System Copies
Homogeneous System Copy with the Database Manager CLI
Standby Databases with SAP DB
Setting Up a Standby Instance
Starting the Standby Instance as an Active Instance
Importing Log Backups up to a Specific Time
Importing Another Manual Log Backup
Copying the Log Volumes of the Original Instance
Example: Standby Database