How do I backup my Oracle Database 10g?
The backup and recovery scenarios described here are based on Oracle® Real Application Clusters Administrator’s Guide 10g Release 1 (). To configure Oracle for backup, the user performing the configuration must be logged in with database administrator privileges. To make an efficient backup: Define the location of the snapshot control file. Apr 04, · On Linux with Gnome: In the Applications menu, point to Oracle Database 10g Express Edition, and then select Backup Database. On Linux with KDE: Click the icon for the K Menu, point to Oracle Database 10g Express Edition, and then select Backup Database. A console window opens so that you can interact with the backup script.
Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. The backup generated.
Now I want to restore the database from the above taken backup files. I do not want to use RMAN. In above imp command, I intel watchdog timer driver what does it do not understand which file to supply against "location of. This does not apply in your case. What you need to do is manually restore the database.
There is lots of things relating to this topic, far more than can be covered here, so the best thing for you to do is read the online documentation. Your EMP DBF contains the daatbase eg what columns are in the table, which tables are in which tablespace. Without the metadata, the contents of EMP DBF are unintelligible.
You don't restoee to worry about moving redo logs, archived redo logs or control files for a databasf tablespaces copy. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. How to restore Oracle 10G database from backup Ask Question. Asked 11 years, 2 months ago. Active 11 years, 2 months ago. Viewed 11k times. I have an Oracle 10G database. I ran following script to take the backup of the database.
I have come to know that using following command I can restore the. Can anyone please help? APC k 19 19 gold badges silver badges bronze badges. Add a comment. Active Oldest Votes. Gary Myers Gary Ratabase Sign up or log in Wnd up using Google. Sign up using Facebook.
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Restoring and Recovering Databases
Oracle® Database Backup and Recovery Basics 10g Release 2 () B November An introduction to the basics of backup and recovery of Oracle databases, focusing on the use of Recovery Manager for common backup and recovery tasks. Overview of Database Backups. Backing Up An Oracle 10g Single Instance Database. Backing Up An Oracle 10g Single Instance Database. To make an efficient backup: Define the location of the snapshot control file. Configure the auto backup control file. Configure the . 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 .
This section of the Oracle DBA tutorial will include various aspects of backing up databases, strategies for backup, restoring and backing up of commands, RMAN configuration for backup, restoring and recovering databases, and restoring tablespaces, datafiles, and blocks.
Backup is key to providing a secure and reliable database environment. Now, data loss can be caused due to various reasons, which are why taking backups becomes so important. Some of the reasons for data loss are:. We can use RMAN to back up databases as a complete backup or incremental backup. Other than RMAN, Oracle also supports user-managed backup and recovery, where users can implement the backup and recovery of databases using a mixture of host operating commands and SQL Plus commands, i.
In user-managed backup and recovery, a user will be scheduling how and when the backup has to be implemented. When comparing both backup and recovery solutions, RMAN is most recommended since it offers one common interface for implementing backup across all different host operating systems, which makes it very user-friendly. In this section, we will learn how to take backups, how to recover files, databases, etc.
OEM is a set of web-based tools used to manage software and hardware that are produced by Oracle Corporation. To take the RMAN backup of a database, we create and save copies of the database to disk and tape with certain retention policies. A duplicate or copy database created by Recovery Manager, i.
As shown in the following image, RMAN connects to the source database, the one that needs to be backed up. This is how the Recovery Manager works. However, before we can start backing up a database, we will have to configure our Recovery Manager. RMAN uses either a catalog to track and manage backups or the control file of the database for this purpose. We will first understand how to take RMAN backups using Oracle Enterprise Manager, and then we will understand how to do the same using commands.
Have you got more queries? This saves us a lot of time and is also cost-efficient since the whole backup approach is automated. Step 2: Next, we will move to the Backup Set tab as shown below:. Step 3: Now, we will move on to the Policy tab as shown in the following screenshot:. Note: It is strongly recommended to specify the automatic backup as Database Control File and Server Parameter File are very important files.
Note : Selecting to retain full backups for each data file as 1 the default value will mark the older backups as obsolete whenever a new backup is taken, i. Later, we can delete the obsolete backups using the following command:. Learn about maintenance in the database in our blog on Oracle Database Maintenance! This command will back up the database with the archive logs and write the backup file to the disk.
This provides a good way to gain a better understanding of the backup options and RMAN commands. Till now, we were talking about how to take backups in Oracle.
Oracle provides various options for recovery, such as rolling back a query or returning to a point before a change. To use RMAN to restore or recover a database, we must first connect to the recovery catalog and then allocate channels to the tape or disk. The catalog has information about the database backup and backup set. A control file can be used for the same information. The restore database command restores the database files, and the recover database command applies any of the changes that are in the archive logs.
In SQL Server, we have the option to restore with recovery or with no recovery. With Oracle, we can just restore the database, and then use the recover database command with options to define at which point to recover. Along with this, Oracle RMAN recover database command can bring the database to a point in time, to a change number, or to a specific archive log.
If there are more tablespaces in the database, there is a way to recover with downtime for only the applications or users in the damaged tablespace. After restoring a tablespace, we should run a backup, because recovering the tablespace after the restore is not possible.
Using RMAN, we can supply the datafile number and block number to recover the blocks. The advisor provides a repair script, and the recovery is possible without data loss. Do you dream to get certified in Oracle DBA? Managing backups is not just about purging and maintaining the retention policy, but also about knowing which backups are available for restores. Oracle provides several ways to get information about backup sets. This would show the different backup pieces and details, including the checkpointed SCN, the date, full or incremental, and tablespaces that were backed up.
Data dictionary views and recovery catalog tables also provide views into the backup sets to help manage backups and to know which backups are available for restoring. With Oracle, restoring the database is normally to restore the full system, but there are utilities available to pull out just the objects by schema, or even at the table level. This allows us to secure backups for these objects, copy them to another system, or perhaps to refresh a test environment with just the needed schema or tables.
We can set up a Data Pump export job to recover just a table or another object, such as a view or stored procedure. The exports include Data Definition Language DDL , which creates the structures of the tables, procedures, triggers, indexes, views, and other objects. Exports can also be done without data, to provide just the structures, which we can then copy to another schema or save as a backup. The Oracle recycle bin works with the tables that have been dropped.
For example, if we are refreshing a couple of tables and we realized that we dropped the wrong tables, we can retrieve those objects from the recycle bin. The recycle bin has been available since Oracle Database 10g and is on by default. Users have their own recycle bins.
Flashback in Oracle is a set of tools that allow System Administrators and the users to view and even manipulate the past state of data without having to recover to a fixed point in time. Using the flashback command, we can pull a table out of the recycle bin. The objects in the recycle bin can be cleared out with the purge command. Users can clear their own recycle bins using the below purge command:. Leave a Reply Cancel reply. Your email address will not be published.
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