Archiving Redo log   «Prev  Next»
Lesson 7

Archivelog Mode Conclusion

Now that you have completed this module on archiving, you should be comfortable with the following tasks:
  1. Placing a database in archivelog mode
  2. Controlling the archive log destination
  3. Specifying the naming convention to use for archive log files
  4. Enabling automatic archiving of log files
  5. Manually archiving log files
  6. Viewing the log history

Enabling ArchiveLog Mode in Oracle 13c Cloud Infrastructure

When using the Oracle 13c, how do you place a database in archivelog mode?
When managing an Oracle 13c database in the Oracle Cloud Infrastructure (OCI), it is crucial to enable the ArchiveLog mode to ensure that you maintain a continuous record of database changes. This mode is essential for disaster recovery and point-in-time recovery scenarios. In this tutorial, we will guide you through the steps required to enable ArchiveLog mode in your Oracle 13c database hosted on OCI.

Prerequisites:

  1. Access to the Oracle Cloud Infrastructure console.
  2. An Oracle Database 13c instance running on OCI.
  3. The necessary privileges to manage the database instance (SYSDBA or equivalent).

Step 1: Connect to the Database Instance
To begin, connect to your Oracle Database 13c instance using SQL*Plus, SQL Developer, or any other preferred Oracle database client. You will need to use an account with SYSDBA privileges, such as the SYS or SYSTEM user.
Step 2: Verify the Current Mode
Before you enable ArchiveLog mode, check the current mode of your database by executing the following SQL query: 
SELECT log_mode FROM v$database;

If the result is "NOARCHIVELOG," you need to enable ArchiveLog mode. If it is already "ARCHIVELOG," no further action is required.
Step 3: Enable ARCHIVELOG Mode First, ensure that the database is in the mounted but not open state. To do this, shut down the database and then mount it: 
SHUTDOWN IMMEDIATE;
STARTUP MOUNT;

Next, enable ArchiveLog mode by executing the following command: 
ALTER DATABASE ARCHIVELOG;
Step 4: Open the Database Now that ArchiveLog mode is enabled, open the database with the following command: 
ALTER DATABASE OPEN;

Step 5: Verify the New Mode
Finally, verify that the database is indeed in ArchiveLog mode by running the same SQL query as in Step 2: 
SELECT log_mode FROM v$database;

The result should now display "ARCHIVELOG."
By following these steps, you have successfully enabled ArchiveLog mode for your Oracle 13c database running on Oracle Cloud Infrastructure. This mode ensures that you maintain a continuous record of database changes, which is vital for disaster recovery and point-in-time recovery scenarios. Remember to monitor and manage your archived redo logs as needed to optimize storage and performance.

In the next module, you will learn about managing tablespaces and data files.

Glossary

In this module, you were introduced to the following glossary term:
  1. Archivelog mode

Redolog Files - Quiz

Your one final task is to take this quiz. It will test your knowledge of the material covered in this module.
Redolog Files - Quiz