Lesson 1

Welcome to Oracle Database Backup and Recovery Using Export, Import, and Recovery Manager.
The data stored in your company's database is one of your company's most valuable resources. Even though the Oracle database is an extremely reliable database, you should always take precautions to guard against problems that could lead to the loss of this data.
You can never tell when a disk drive will fail, an operator will accidentally cause the database to crash, or a natural disaster, such as a power surge, will occur and destroy your database forever. An ounce of protection, in this case, is worth much more than a pound of cure, because once your data is gone, is gone forever. Your data will be gone unless you have implemented a proper backup strategy that will allow you to recover most or all of the data that was put in peril. And that is what this course is all about.

• Oracle Database Backup Recovery Course Goals:
  After completing the course, you will be able to:
  1. Use the Oracle Export and Import utilities
  2. Understand and be able to use and maintain Oracle Recovery Manager
  3. Understand the function and operation of the recovery catalog
  4. Create and manage file copies and image copies
  5. Create and use backup sets to backup your database
  6. Understand how to plan and implement a complete backup strategy

• Course Learning Methodologies:
  In this course, you will learn both about creating backups and how to work with the backed up data. You will get practice performing backups through the use of the Simulations. You will also be able to interact with a variety of image galleries, which will walk you through a series of graphics that illustrate the concepts explained in the lessons.
• QuickChecks:
  QuickChecks are unscored opportunities for you to self-check your understanding of key points before you arrive at an Exercise or Quiz that is scored. You will see an icon that you click to display a brief question, and then you will click again to see the correct answer in a short animated sequence. If you are running a Java Virtual Machine in Chrome, FIrefox or Internet Explorer you will need to disable the JIT compiler in your Internet Options dialog box.

Microsoft Edge does not have the Java Virtual Machine (JVM) enabled by default. Here's why and what options you have:

• Modern Browsers and Plugins:Most modern browsers, including Edge, Chrome, and Firefox, have moved away from supporting traditional plugins like Java applets due to security and stability concerns.
• Focus on HTML5:Browsers now prioritize HTML5, JavaScript, and other open web standards for delivering rich web experiences. These technologies offer better performance and security compared to older plugin-based approaches.

However, you can still access Java content on Edge in a couple of ways:

1. IE Mode: Microsoft Edge has a built-in "IE mode" that allows you to render specific websites using the Internet Explorer engine. Since Internet Explorer supports Java applets, this can be a workaround for accessing legacy Java applications. To use IE mode, you'll need to configure it through Edge's settings or Group Policy (for enterprise environments).
2. Third-party Extensions: There might be third-party extensions available for Edge that claim to enable Java support. However, exercise caution when using such extensions, as they might have security implications or might not work reliably.

Important Considerations:

• Security:Java applets have historically been a source of security vulnerabilities. If you must use Java content, ensure you have the latest Java updates installed and only access trusted websites.
• Modern Alternatives:If possible, consider whether there are modern, HTML5-based alternatives to the Java applications you need to access. This will generally provide a safer and more efficient browsing experience.

Oracle Database Backup and Recovery Using Export, Import, and Recovery Manager is the third of three courses in the Oracle Backup and Recovery Certification Series. The goal of this series is to:

1. Prepare students to pass the Oracle backup and recovery certification exam
2. Prepare students to perform Oracle backup and recovery tasks as an Oracle database administrator

In the next lesson, you will learn about prerequisites to this course.