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Assessment Title
Rule Text
A minimum of three Oracle redo log groups/files must be defined and configured to be stored on separate, archived physical disks or archived directories on a RAID device. In addition, each Oracle redo log group must have a minimum of two Oracle redo log members (files).
Description
Discussion Text
The Oracle Database Redo Log files store detailed transactional information on changes made to the database using SQL Data Manipulation Language (DML), Data Definition Language (DDL), and Data Control Language (DCL), which is required for undo, backup, restoration, and recovery.
A minimum of three Oracle redo log groups/files must be defined and configured to be stored on separate, archived physical disks or archived directories on a RAID (mirrored) device. In addition, each Oracle redo log group must have a minimum to two Oracle redo log members (files).
Each side of the Redo Log Mirror (group 1, member 1) is identical to its mirror image (group 1, member 2), making it possible to continue operations if one file or even one complete mirror is lost due to corruption or accidental deletion. Writing each mirror to a physically and logically separate storage device is an important part of minimizing single points of failure.
Oracle redo logs, which are crucial for database recovery, are managed at the CDB level, not at the PDB level.
A minimum of three Oracle redo log groups/files must be defined and configured to be stored on separate, archived physical disks or archived directories on a RAID (mirrored) device. In addition, each Oracle redo log group must have a minimum to two Oracle redo log members (files).
Each side of the Redo Log Mirror (group 1, member 1) is identical to its mirror image (group 1, member 2), making it possible to continue operations if one file or even one complete mirror is lost due to corruption or accidental deletion. Writing each mirror to a physically and logically separate storage device is an important part of minimizing single points of failure.
Oracle redo logs, which are crucial for database recovery, are managed at the CDB level, not at the PDB level.
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