RMAN

RMAN (Recovery Manager) is a backup and recovery manager supplied for Oracle databases (from version 8) created by the Oracle Corporation.[1] It provides database backup, restore, and recovery capabilities addressing high availability and disaster recovery concerns. Oracle Corporation recommends RMAN as its preferred method for backup and recovery and has written command-line and graphical (via Oracle Enterprise Manager) interfaces for the product.

Implementation

The designers of RMAN aimed at integration with Oracle database servers, providing block-level corruption detection during backup and restore processes. RMAN optimizes performance and space-consumption during backup with file multiplexing and backup-set compression; it integrates with Oracle Secure Backup and with third-party media management products for tape backup.

The syntax system of many commands and options allows database administrators to fine-tune the methods and performance of backups and restores of Oracle data and Oracle configuration information.[2]

"Complete recovery" entails restoring all available consistent information to the most current time. "Incomplete recovery" options allow specifying restoration to a given time in the past.[3] It can also restore a specific tablespace (group of database objects) or a specific table.

RMAN can use a defined "fast recovery area" (originally called the "flash recovery area") for backup and recovery data.[4]

References
  1. "Encrypt backups using Oracle 10gR2's RMAN". TechRepublic. Retrieved 2017-09-20.
  2. Oracle Database Backup and Recovery Reference 11g Release 1 (11.1)
  3. Oracle Database Concepts 11g Release 1 (11.1).
  4. Vallath, Murali (2014). "10: Tuning Recovery". Expert Oracle .l. RAC Performance Diagnostics and Tuning. Expert's voice in Oracle. Apress. p. 335. ISBN 9781430267102. Retrieved 2017-08-30. The fast recovery area (called flash recovery area in earlier versions of Oracle) is an Oracle-managed directory, file system, or ASM diskgroup that provides a centralized disk location for backup and recovery files.


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