What is an Offline Backup?
An offline backup is a backup of a tablespace or data file, which is taken while the tablespace or the data file is offline and the database is open. A tablespace can be taken offline by executing the ALTER TABLESPACE…OFFLINE; statement. Similarly, a data file can be taken offline by executing the ALTER DATABASE DATAFILE…OFFLINE; statement. After taking the backup, the tablespace can be brought online using the ALTER TABLESPACE …ONLINE; statement. Similarly, the data file can be brought online using the ALTER DATABASE DATAFILE…ONLINE; statement.
Offline backup is a way to store files from a network so that they will be accessible even when the user is not connected to the network they are stored on. It is a beneficial feature to users who often rely on telecommuting with portable computers or mobile devices and who therefore are not always in direct contact with the network they typically access files from. Offline backup is used as a safety precaution because it is not available for updating, so it remains as an untouched copy of a file at the time it is saved or copied offline. Saving a file or folder into offline backup will ensure that there is a copy of the file that is available for being referenced, should an error occur with the network or if the system were to crash. Because of this, many users depend on offline backup for peace of mind in the home or in the workplace. Many businesses uses offline backup to store files so that they are unchanged and easily referenced. This sort of backup is available by using download
