 |
|
Oracle Tips by Burleson |
Oracle10g Grid Computing
with RAC
Chapter 13 - Oracle RAC Backup and Recovery
Archive Log
Gap Resolution and FAL
There are
two modes of gap resolution:
-
The
automatic one, which is controlled by the archiver and turned on
automatically. The automatic gap resolution works proactively and will
produce some network overhead.
-
The FAL
(Fetch Archive Log) method, which requests certain logs as required
from the remote systems. On the receiving instance, one or more FAL-Servers
is published from which it receives its archive logs . On the sending
instance, one or more FAL-Clients is published, which receive archive
logs from a specified instance. The publishing is done by the
initialization parameters fal_server
and
fal_client.
FAL is not
supported for logical standby databases. A typical configuration using
our example RAC could be:
Instance
v10g1 and v10g2:
FAL_CLIENT=v10g3
Instance
v10g3 and v10g4:
FAL_SERVER=v10g1,v10g2
When
cross-instance archival is configured, instance v10g3 will now receive
missing archive logs from instance v10g2, and instance v10g4 from
instance v10g1.
For more information,
see the book
Oracle 11g Grid and Real Application Clusters - 30% off if
you buy it directly from Rampant TechPress .
Written by top
Oracle experts, this RAC book has a complete online code depot with
ready to use RAC scripts.
Customized Oracle Training
Classes
Burleson Consulting offers
on-site
Oracle courses
year-round in a variety of Oracle topics. All on-site Oracle training can be
custom fit to
meet your specific training needs. For
customized
syllabus development or a price quote, please visit
www.fast-track.cc or email
 .
|
