From a systems management perspective, this module has given you some good ideas about the new features within Oracle9i.
Backup and recovery within this version is much more robust than previous versions of Oracle.
Now that you have completed this module, you should be able to:
- Describe the concept and process of Fast-Start Fault Recovery
- Explain the steps involved in Fast-Start rollback
- Describe the effects of Fast-Start checkpointing
- Implement Fast-Start parallel rollback
- Explore the features of a read-only database
- Create a standby database
You were introduced to the following terms in this module:
- Checkpointing: The process of writing all transactions into the redo log files.
- Dirty buffer: When a user changes the records within a transaction, that transaction within the buffer becomes dirty or changed.
- Buffer cache: A buffer cache is a memory area within the Oracle database, where records are processed.
- Parallel rollback: Rolling back of data within multiple parallel processes.
- Rollback: This is a process, where the Oracle server replaces the old values for a record when a transaction is not committed.
- Roll forward phase: In this process, which happens during recovery, all transactions within the redo log files are applied to the database.
- Serial rollback: Rolling back of data within a single serial process.
In the next module you will learn about additional improvements Oracle8i
brings to backup and recovery.