What are the main methods for Oracle database backup?
Oracle database provides five backup methods: full backup, incremental backup, archive log backup, flashback backup and cloud backup. Choosing the best method depends on data recovery target time, data volume, storage space, security and compliance requirements.
Oracle database backup method
Oracle database provides a variety of backup methods to ensure data security and Availability. These methods include:
1. Full backup
- Create a complete copy of the database.
- Capture the entire state of the database, including data, metadata and control files.
- Create using backup tool
RMAN.
2. Incremental backup
- Only backs up data blocks that have changed since the last full backup.
- Smaller and faster than full backup.
- Create using the
RMANorALTER DATABASE ... BACKUP INCREMENTAL ...statement.
3. Archive log backup
- Back up the log files of transactions executed by the database.
- Essential for recovering a crashed or damaged database.
- Create using
RMANorALTER SYSTEM ARCHIVE LOG ...statement.
4. Flashback backup
- Create a backup of the database at a specific point in time.
- Allows the database to be restored to that specific point in time.
- Create using the
RMANorFLASHBACK DATABASE ... TO ...statement.
5. Cloud Backup
- Store database backup in a cloud storage service.
- Provides offline backup, data protection and disaster recovery.
- Services provided by third-party cloud providers.
Choose a backup method
Choosing the best backup method depends on several factors, including:
- Data recovery goals Time
- Data volume
- Available storage space
- Security and compliance requirements
The above is the detailed content of What are the main methods for Oracle database backup?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
How to check tablespace size of oracle
Apr 11, 2025 pm 08:15 PM
To query the Oracle tablespace size, follow the following steps: Determine the tablespace name by running the query: SELECT tablespace_name FROM dba_tablespaces; Query the tablespace size by running the query: SELECT sum(bytes) AS total_size, sum(bytes_free) AS available_space, sum(bytes) - sum(bytes_free) AS used_space FROM dba_data_files WHERE tablespace_
How to encrypt oracle view
Apr 11, 2025 pm 08:30 PM
Oracle View Encryption allows you to encrypt data in the view, thereby enhancing the security of sensitive information. The steps include: 1) creating the master encryption key (MEk); 2) creating an encrypted view, specifying the view and MEk to be encrypted; 3) authorizing users to access the encrypted view. How encrypted views work: When a user querys for an encrypted view, Oracle uses MEk to decrypt data, ensuring that only authorized users can access readable data.
How to view instance name of oracle
Apr 11, 2025 pm 08:18 PM
There are three ways to view instance names in Oracle: use the "sqlplus" and "select instance_name from v$instance;" commands on the command line. Use the "show instance_name;" command in SQL*Plus. Check environment variables (ORACLE_SID on Linux) through the operating system's Task Manager, Oracle Enterprise Manager, or through the operating system.
How to uninstall Oracle installation failed
Apr 11, 2025 pm 08:24 PM
Uninstall method for Oracle installation failure: Close Oracle service, delete Oracle program files and registry keys, uninstall Oracle environment variables, and restart the computer. If the uninstall fails, you can uninstall manually using the Oracle Universal Uninstall Tool.
How to solve the problem of closing oracle cursor
Apr 11, 2025 pm 10:18 PM
The method to solve the Oracle cursor closure problem includes: explicitly closing the cursor using the CLOSE statement. Declare the cursor in the FOR UPDATE clause so that it automatically closes after the scope is ended. Declare the cursor in the USING clause so that it automatically closes when the associated PL/SQL variable is closed. Use exception handling to ensure that the cursor is closed in any exception situation. Use the connection pool to automatically close the cursor. Disable automatic submission and delay cursor closing.
How to check invalid numbers of oracle
Apr 11, 2025 pm 08:27 PM
Oracle Invalid numeric errors may be caused by data type mismatch, numeric overflow, data conversion errors, or data corruption. Troubleshooting steps include checking data types, detecting digital overflows, checking data conversions, checking data corruption, and exploring other possible solutions such as configuring the NLS_NUMERIC_CHARACTERS parameter and enabling data verification logging.
How to delete all data from oracle
Apr 11, 2025 pm 08:36 PM
Deleting all data in Oracle requires the following steps: 1. Establish a connection; 2. Disable foreign key constraints; 3. Delete table data; 4. Submit transactions; 5. Enable foreign key constraints (optional). Be sure to back up the database before execution to prevent data loss.
How to create cursors in oracle loop
Apr 12, 2025 am 06:18 AM
In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.
