How do I backup my Oracle Database 10g?

How do I backup my Oracle Database 10g?

Backing Up An Oracle 10g RAC Database

  1. Define the location of the snapshot control file.
  2. Configure the auto backup control file.
  3. Configure the archived redo logs.
  4. Configure the flash recovery area.

How you will maintain Oracle backup and recovery for the company’s database?

You should follow these basic steps:

  1. After identifying which files are damaged, place the database in the appropriate state for restore and recovery.
  2. Restore the files with an operating system utility.
  3. Restore any necessary archived redo log files.
  4. Use the SQL*Plus RECOVER command to recover the datafile backups.

What is expired backup in Oracle?

EXPIRED is where Oracle think is has a backup but the file is no longer available, ie deleted. OBSOLETE is where backups exist but are no longer required for a complete recovery. OBSOLETE backups depend upon several things in the CONFIGURE settings such as the retention policy.

What is database backup and recovery?

Backup and recovery describes the process of creating and storing copies of data that can be used to protect organizations against data loss. This is sometimes referred to as operational recovery.

How can database help in backup and recovery?

A backup is a copy of data from your database that can be used to reconstruct that data. Backups can be divided into physical backups and logical backups. Physical backups are backups of the physical files used in storing and recovering your database, such as datafiles, control files, and archived redo logs.

What is the difference between expired and obsolete backup?

A backup is obsolete when REPORT OBSOLETE or DELETE OBSOLETE determines, based on the user-defined retention policy, that it is not needed for recovery. A backup is considered expired only when RMAN performs a crosscheck and cannot find the file. In short, obsolete means “not needed,” whereas expired means “not found.”

How do I know if my backup is obsolete?

To report obsolete backups:

  1. Start RMAN and connect to a target database and recovery catalog (if used).
  2. Execute the CROSSCHECK command to update the status of backups in the repository compared to their status on disk.

What is database recovery?

Recovery is the rebuilding of a database or table space after a problem such as media or storage failure, power interruption, or application failure. If you have backed up your database, or individual table spaces, you can rebuild them should they become damaged or corrupted in some way.

What are the types of backup and recovery?

There are mainly three types of backup are there: Full backup, differential backup, and incremental backup.

What are the types of recovery in Oracle?

There are three basic types of recovery: instance recovery, crash recovery, and media recovery. Oracle performs the first two types of recovery automatically at instance startup; only media recovery requires you to issue commands.

How to perform oracle backup and recovery?

There are two ways to perform Oracle backup and recovery: Recovery Manager and user-managed backup and recovery. Recovery Manager (RMAN) is an Oracle utility that can back up, restore, and recover database files. It is a feature of the Oracle database server and does not require separate installation.

What is complete recovery in Oracle Database?

Complete recovery involves using redo data or incremental backups combined with a backup of a database, tablespace, or datafile to update it to the most current point in time. It is called complete because Oracle applies all of the redo changes contained in the archived and online logs to the backup.

When to terminate recovery in Oracle?

Because you are not completely recovering the database to the most current time, you must tell Oracle when to terminate recovery. You can perform the following types of media recovery. Recovers the data up to a specified point in time.

How to recover data after a backup has been restored?

After a backup has been restored, however, detection of the need to recover it through media recovery is automatic. Has a recovery time governed solely by user policy (for example, frequency of backups, parallel recovery parameters, number of database transactions since the last backup) rather than by Oracle internal mechanisms.