When do I need to back up my Oracle Database?

When do I need to back up my Oracle Database?

This discussion describes general guidelines that can help you decide when to perform database backups, which parts of a database you should back up, what tools Oracle provides for those backups, and how to configure your database to improve its robustness and make backup and recovery easier.

Why do I need a flash recovery area in Oracle?

It is recommended that you take advantage of the flash recovery area to store as many backup and recovery-related files as as possible, including disk backups and archived redo logs. Some features of Oracle database backup and recovery, such as Oracle Flashback Database and guaranteed restore points, require the use of a flash recovery area.

Which is the basis of a data recovery strategy?

Your plans for data recovery strategies are the basis of your plans for backup strategy.

What’s the best way to manage redundancy in Oracle?

The simplest way to manage your redundancy set is to use a flash recovery area, on a separate device from the working set files. However, whether or not you use a flash recovery area, Oracle recommends the following practices: Multiplex the online redo log files and current control file at the database level.

This strategy enables you to quickly return your database to its state at any point during the preceding 24 hours. If you need more flexible backup options, then refer to Oracle Database Backup and Recovery Basics.

Which is the best way to back up a database?

This backup can be either an image copy backup, which is an exact copy of the datafile as if copied with a host operating system file copy command, or a backup set created by RMAN. Regardless of the form in which the backup is stored, the entire datafile is backed up, even if only a few blocks have changed.

What are the different types of database backups?

It introduces several types of Oracle database backup, then explains how to perform the different backup types, how to take advantage of Enterprise Manager’s Oracle-suggested backup strategy to implement a useful basic backup regimen permitting fast recovery, and how to schedule your own backups. Note:

How to create a backup script for Oracle?

To create the backup script for UNIX and Linux: Start a text editor and create and save a file with the following contents. Save the file in a directory that is accessible to the Oracle Database software and on which the Oracle software owner has the read permission.

Do you need to back up archived data when backing up a database?

There is no need to back up archived logs when performing an offline backup because the database is in a consistent state at the time of backup and does not require media recovery if you restore from this backup. Nevertheless, you can include archived logs in the backup if you wish.

What kind of backup is used in Oracle 9-7?

There is no need to explicitly mention the type of compression used or how to decompress the backup set in the recovery operation. Example 9-7 backs up the entire database and archived logs to the configured default backup destination (disk or tape), producing compressed backup sets.

Can a database be backed up in a Data Guard?

As explained in “RMAN File Management in a Data Guard Environment”, you can run RMAN backups at any database in a Data Guard environment. Any backup of any database in the environment is usable for recovery of any other database if the backup is accessible.