Books for you

Data Recovery Advisor
The Data Recovery Advisor is used in recovering from corrupted blocks, corrupted
or missing files, and other data failures and is integrated with database
health checks and RMAN.
Automatic Storage Management
Oracle Database 10g introduced Automatic Storage Management (ASM). ASM provides
a file system and volume manager in the database, enabling automated striping
of files and automating mirroring of database extents. DBAs simply define a pool of
126 | Chapter 5: Managing Oracle
storage or disk group and manage the disk group through EM. Disk groups are
created with normal redundancy as the default (2-way mirroring). You can also create
disk groups with high redundancy (3-way mirroring) or external redundancy (no
mirroring). Failure groups are ASM disks that share a common failure point, so mirroring
will automatically occur to a different failure group to provide high availability.
Oracle manages the files that are stored in ASM disk groups. ASM can manage Oracle
datafiles, logfiles, control files, archive logs, and RMAN/backup sets.


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