Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

You can use quotas to limit the amount of file system space used by Storage
Checkpoints.
With Veritas Storage Foundation for Oracle, you can enable, disable, set, and
display quota values for a single file system, for multiple file systems, or for all
file systems in a database using the dbed_ckptquota command.
See “Administering Storage Checkpoint quotas using dbed_ckptquota” on page 338.
See the Veritas File System Administrator's Guide.
About cluster functionality (optional)
File system clustering is an optional, separately licensed feature of VxFS, where
one system is configured as a primary server for the file system, and the remaining
members of a cluster are configured as secondary servers. All servers access
shared disks for file data operations. If the primary server fails, one of the
secondary servers takes over the file system operations.
See the Veritas File System Administrator's Guide.
How Veritas Storage Mapping works
Veritas Storage Mapping is a feature included with Veritas Storage Foundation
for Oracle Enterprise Edition.
Veritas has defined and implemented a library called Veritas Mapping Service
(VxMS) that provides a mapping interface to VxFS file systems, VxVM volumes,
and physical disks. With Veritas Storage Foundation for Oracle, you can take
advantage of this feature to map datafiles or containers, depending on your
database, to physical devices and display storage object I/O statistics. With the
vxstorage_stats command, you can view the complete I/O topology mapping of
datafiles or containers through intermediate layers like logical volumes down to
actual physical devices. You can also use vxstorage_stats to view statistics for
VxFS file systems, VxVM volumes, and physical devices. This information can be
used to determine the exact location of a data block on a disk and to help identify
hot spots.
In addition to vxstorage_stats, you can use the dbed_analyzer command to
obtain tablespace-to-physical disk mapping information for all the datafiles in a
specified database. The command also provides information about the amount of
disk space being used by a tablespace. Because the dbed_analyzer command
output can be long, it is written to a file for easier viewing.
37Introducing Veritas Storage Foundation for Oracle
How Veritas Storage Mapping works