Asked by: Vandana Grauwinkelasked in category: General Last Updated: 26th June, 2020
What are the types of backup in Oracle?
- Physical backups are backups of the physical files used in storing and recovering your database, such as data files, control files, and archived redo logs.
- Logical backups contain logical data (for example, tables or stored procedures) extracted from a database with Oracle Data Pump (export/import) utilities.
Also know, what is logical backup in Oracle?
Logical backups are backups in which the export utility (for example Exp) uses SQL to read database data and then export it into a binary file at the operating system level. You can then import the data back into a database using the import utility (Imp).
Also Know, what is physical and logical backup in Oracle database? physical backup is to copy for backing up all the physical files that belongs to database. (like data files,control files,log files, executables etc). In logical backup, you don’t take the copies of any physical things,you only extract the data from the data files into dump files.
Similarly, it is asked, what is the difference between Level 0 and Level 1 backup?
The only difference is that the level 0 backup is recorded as an incremental backup in the RMAN repository, so it can be used as the parent for a level 1 backup. A backup of online, read/write datafiles when the database is open. A backup of any part of the target database when it is mounted but not open.
What is RMAN command?
RMAN (Recovery Manager) Commands in Oracle. Remove Oracle schema from the recovery catalog. RMAN > DROP CATALOG; RESYNC CATALOG command. Perform a full resynchronization, which creates a snapshot control file and then copies any new or changed information from that snapshot control file to the recovery catalog.