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What is configure retention policy redundancy 1?
The default retention policy is REDUNDANCY = 1 , to maintain compatibility with the behavior of REPORT OBSOLETE in earlier RMAN releases. If the retention policy is configured to NONE , then REPORT OBSOLETE and DELETE OBSOLETE do not consider any backups to be obsolete.
What is a backup retention policy?
Backup retention, also referred to as data retention is defined as a policy for retaining data to meet the legal and business needs of an organization. Creating a backup retention policy allows users to determine which backups will be kept, what storage types will be used and how long the data will be stored.
What is Oracle retention policy?
A retention policy determines when files are obsolete, meaning that they are no longer needed to meet your data recovery objectives. When using a policy based on redundancy, you specify how many full or level 0 backups of each data file and control file that Oracle Recovery Manager (RMAN) keeps.
How does backup retention work?
A Backup Retention Policy determines the retention time of data, archival rules, data formats and the permissible means of storage, access and encryption, while weighing legal and privacy concerns against economics and ‘need to know’ concerns.
What is the most common backup retention policy?
The most common method of long-term retention is through backups. Here, we will look at a simple, fictitious example of HR payroll systems and records which will be kept for 7 years. Retention: Daily – 31, Weekly – 52.
How do I know when my backup expires?
Expired backups We can run RMAN crosscheck command to check if backup files exists at OS level or not. If the backup files are not found, RMAN will mark it as EXPIRED.
How do I set RMAN retention policy?
You can set the retention policy to the number of backups you want to retain. You can change this value anytime. The new retention policy setting applies to backups taken after the change. From the RMAN command line, execute an RMAN script similar to the one below to set the number of backups that must be retained.
When to enable long-term backup retention in Pitr?
Backup retention for purposes of PITR within the last 1-35 days is sometimes called short-term backup retention. If you need to keep backups for longer than the maximum short-term retention period of 35 days, you can enable Long-term retention.
How long does it take to restore a geo redundant database?
After the backup storage redundancy of an existing database is updated, it may take up to 48 hours for the changes to be applied. Note that, geo restore is disabled as soon as a database is updated to use local or zone redundant storage.
How to change backup storage redundancy in azure?
In the Azure portal, the option to change backup storage redundancy is located on the Compute + storage blade accessible from the Configure Managed Instance option on the Basics tab when you are creating your SQL Managed Instance. Find the option to select backup storage redundancy on the Compute + storage blade.
Why are backups retained after a database is deleted?
Backups of a database are retained to enable PITR even if the database has been deleted. While deleting and re-creating a database may save storage and compute costs, it may increase backup storage costs, because the service retains backups for each deleted database, every time it is deleted.