What are the architectural components of RMAN?
There are several key architectural components to be aware of:
- RMAN executable.
- Server processes.
- Channels.
- Target database.
- Recovery catalog database (optional)
- Media management layer (optional)
- Backups, backup sets, and backup pieces.
What is RMAN in Oracle 11g?
Recovery Manager (RMAN) is an Oracle Database client that performs backup and recovery tasks on your databases and automates administration of your backup strategies. It greatly simplifies backing up, restoring, and recovering database files. For example, the RMAN client on Linux is located in $ORACLE_HOME/bin .
What are new features in Oracle 11g RMAN?
Advice on data recovery, parallel backup of the same file, virtual catalogs for security, duplicate database from backup, undrop a tablespace, and secure backup to the cloud are just a few of the new gems available from RMAN in Oracle Database 11g.
What are the components in Recovery Manager?
Recovery Catalog Database: This database maintains information about a Recovery Manager backups. Disk: This is the disk that will hold the backed up data. Media Management Layer: This is the software that will manage writing to the tape subsystems. Tape: This will hold the backup data.
What is an essential part of any backup system?
Server configuration, Back-up server network security Which is an essential part of any backup system.
What is RMAN cold backup?
Offline backups (also known as Cold or consistent backups) are taken when the database is in a consistent state, i.e. the database has been shut down with the SHUTDOWN NORMAL, SHUTDOWN IMMEDIATE, or SHUTDOWN TRANSACTIONAL commands.
What is RMAN command?
Oracle Recovery Manager (RMAN) satisfies the most pressing demands of performant, manageable backup and recovery, for all Oracle data formats. RMAN provides a common interface, via command line and Enterprise Manager, for backup tasks across different host operating systems.
What is the aim of NoSQL?
What is the aim of nosql? NoSQL is not suitable for storing structured data. NoSQL databases allow storing non-structured data. NoSQL is a new data format to store large datasets.
What are the characteristics of a poor database design?
In turn, poor database design leads to many problems down the line, such as sub-par performance, the inability to make changes to accommodate new features, and low-quality data that can cost both time and money as the application evolves.
What is the Rman repository in RMAN?
The RMAN repository is the collection of metadata about the target databases that RMAN uses for backup, recovery, and maintenance. RMAN always stores its metadata in the control file. The version of this metadata in the control file is the authoritative record of RMAN backups of your database.
Why Oracle RMAN does not require logging or backup mode?
Oracle Database performs this safeguard because it cannot guarantee that a third-party backup tool will copy the file header before copying the data blocks. Unlike user-managed tools, RMAN does not require extra logging or backup mode because it knows the format of data blocks.
What is the use of the recovery catalog in the Rman?
RMAN can create, back up, or recover a standby database. Backups that you make at a standby database are usable at primary database or another standby database for same production database. The recovery catalog is required when you use RMAN in the Data Guard environment.
What is the Rman client?
The RMAN client directs database server sessions to perform all backup and recovery tasks. What constitutes a session depends on the operating system. For example, on Linux, a server session corresponds to a server process, whereas on Windows it corresponds to a thread within the database service.