How to back up data in oracle database
How to back up data in Oracle database
1. RMAN backup
Recovery Manager (RMAN) is a built-in backup tool provided by Oracle. Here are the steps to back up data using RMAN:
- Connect to the Oracle database.
- Create a backup set.
- Add the data files or table spaces to be backed up.
- Perform backup operation.
2. EXP/IMP Export and Import
EXP and IMP utilities are used to export and import data. Here are the steps:
- Export the data using the EXP utility.
- Use the IMP utility to import the exported data.
3. Database replication
Database replication creates a copy of the database and keeps the copy synchronized with the source database. Here are the steps:
- Create the database on the target server.
- Configure replication on the source database.
- Configure replication on the target database.
4. Data Pump Export and Import
Data Pump is a backup and recovery tool introduced in Oracle 10g. Here are the steps:
- Export data on the source database.
- Import the exported data on the target database.
5. Logical backup
Logical backup creates data structures and textual representations of the data. Here are the steps:
- Get the DDL for tables and indexes using the DBMS_METADATA.GET_DDL package.
- Use the DBMS_METADATA.GET_DATA package to retrieve data.
Choose the appropriate backup method
Choosing the appropriate backup method depends on database size, performance requirements, and availability needs. Here are some guidelines:
- #RMAN: Suitable for full backup and recovery of large databases.
- EXP/IMP: Suitable for logical backup and recovery of small to medium-sized databases.
- Database Replication: Suitable for business-critical applications that require high availability.
- Data Pump: Provides faster backup and recovery than RMAN, but the functionality may be more limited.
- Logical backup: Suitable for situations where data structures and data text representations need to be created.
The above is the detailed content of How to back up data in oracle database. 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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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
1662
14
1418
52
1311
25
1261
29
1234
24
What to do if the oracle can't be opened
Apr 11, 2025 pm 10:06 PM
Solutions to Oracle cannot be opened include: 1. Start the database service; 2. Start the listener; 3. Check port conflicts; 4. Set environment variables correctly; 5. Make sure the firewall or antivirus software does not block the connection; 6. Check whether the server is closed; 7. Use RMAN to recover corrupt files; 8. Check whether the TNS service name is correct; 9. Check network connection; 10. Reinstall Oracle software.
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 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.
What to do if the oracle log is full
Apr 12, 2025 am 06:09 AM
When Oracle log files are full, the following solutions can be adopted: 1) Clean old log files; 2) Increase the log file size; 3) Increase the log file group; 4) Set up automatic log management; 5) Reinitialize the database. Before implementing any solution, it is recommended to back up the database to prevent data loss.
Oracle's Role in the Business World
Apr 23, 2025 am 12:01 AM
Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.
What steps are required to configure CentOS in HDFS
Apr 14, 2025 pm 06:42 PM
Building a Hadoop Distributed File System (HDFS) on a CentOS system requires multiple steps. This article provides a brief configuration guide. 1. Prepare to install JDK in the early stage: Install JavaDevelopmentKit (JDK) on all nodes, and the version must be compatible with Hadoop. The installation package can be downloaded from the Oracle official website. Environment variable configuration: Edit /etc/profile file, set Java and Hadoop environment variables, so that the system can find the installation path of JDK and Hadoop. 2. Security configuration: SSH password-free login to generate SSH key: Use the ssh-keygen command on each node
How to stop oracle database
Apr 12, 2025 am 06:12 AM
To stop an Oracle database, perform the following steps: 1. Connect to the database; 2. Shutdown immediately; 3. Shutdown abort completely.
How to export oracle view
Apr 12, 2025 am 06:15 AM
Oracle views can be exported through the EXP utility: Log in to the Oracle database. Start the EXP utility, specifying the view name and export directory. Enter export parameters, including target mode, file format, and tablespace. Start exporting. Verify the export using the impdp utility.
