Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

■ A feature of the Enterprise Edition, VxFS Storage Checkpoint technology
lets you create a point-in-time image of a file system. Storage Checkpoints
are treated like any other VxFS file system and can be created, mounted,
unmounted, and removed with VxFS and Veritas Storage Foundation
administrative utilities.
■ Veritas Storage Mapping
Storage Mapping, a feature of the Enterprise Edition, lets you take full
advantage of Oracle storage mapping to map datafiles to physical devices and
display storage object I/O statistics. Oracle's file mapping (I/O topology) feature
was introduced beginning with Oracle9 Release 2.
Both storage object I/O statistics and the storage structure can be displayed
for a specific file using either the vxstorage_stats command or the Veritas
Storage Foundation GUI. In addition, mapping information showing which
tablespaces reside on which physical disks can be obtained for a specified
database using the dbed_analyzer command.
■ Veritas Database FlashSnap
Database FlashSnap, a feature of the Enterprise Edition and optionally available
in the Standard Edition, lets you create, resynchronize, and reverse
resynchronize an online point-in-time image of a database. You can use this
image to perform backup, other maintenance tasks, or off-host processing
while providing continuous data availability. Also, database administrators
can perform these tasks without root privileges. Database FlashSnap tasks
may be performed through the Veritas Storage Foundation GUI or the command
line interface.
■ Veritas Extension for Oracle Disk Manager
Veritas Extension for Oracle Disk Manager is a custom storage interface
designed specifically for Oracle9i and 10g. Oracle Disk Manager allows Oracle9i
and 10g to improve performance and manage system bandwidth through an
improved Application Programming Interface (API) that contains advanced
kernel support for file I/O.
Veritas Extension for Oracle Disk Manager supports Oracle Resilvering. With
Oracle Resilvering, the storage layer receives information from the Oracle
database as to which regions or blocks of a mirrored datafile to resync after a
system crash. When using Oracle Resilvering, you can turn off VxVM Dirty
Region Logging (DRL), which increases performance.
■ Database Dynamic Storage Tiering
Database Dynamic Storage Tiering, a feature of the Enterprise Edition, enables
you to manage your data so that less-frequently used data can be moved to
slower, less expensive disks, allowing frequently-accessed data to be stored
on the faster disks for quicker retrieval.
19Introducing Veritas Storage Foundation for Oracle
About Veritas Storage Foundation for Oracle