Availability is a hot-button issue with DBAs these days -- users want more of their data
available more of the time. How can you achieve this? One of the technologies that improves
availability is grid computing. Oracle knows this technology is hot; the company has been investing
in grid in recent years. It has also made improvements to its Real Application Clusters (RAC)
feature. What exactly does this feature do? What are the benefits of a grid environment, and how
can you implement RAC and grid to improve availability at your place of work? How is Oracle
delivering these technologies now, and how does the company plan to develop them further? You can
find all this information and more in our new special report. All this month, SearchOracle.com
examined the latest news on grid, RAC and availability. You can find all the new stories and
content we've brought you throughout the month here. This page also compiles expert advice, tips
and analysis from our archives.
|Real Application Clusters (RAC)|
DBAs not planning for downtime: Companies need to do more to reduce the amount of database
downtime resulting from both planned and unplanned events, a new IOUG survey finds.
- NEW! Replacements
boosts efficiency with Oracle 10g on Linux: Replacements Ltd. is helping customers locate
antique tableware more quickly than before thanks to newly implemented Oracle apps running on Red
- NEW! Performance tuning
a RAC implementation: The performance tuning methodology for an Oracle Real Application
Clusters (RAC) configuration can be broadly categorized into these seven steps.
'06 Preview: IOUG's Kaplan on RAC, security, mobility and more: IOUG president Ari Kaplan
explains what's on tap for the Collaborate '06 Oracle users' conference being held later this month
pros use RAC to book a room: Travelocity owner Sabre Holdings says its move to Oracle 9i RAC
will help boost business for travel agents.
Airlines soars with analytics: The Southwest Airlines IT team completed an upgrade to Oracle 9i
RAC and increased its use of data analytics to fend off fierce fare competition and rising fuel
Topic: Running RAC: Real Application Clusters (RAC) offer scalability and availability, but the
cost and complexity may deter some users from running it. Read more about RAC inside.
RAC to consolidate silo databases: Advice from our database design and architecture expert on
the values of using RAC for consolidating applications.
is a cluster? What is RAC?: This expert answer defines clusters and RAC.
DBUA for RAC databases: How to upgrade a RAC 9.0.X database to RAC 9.2.X using the Database
Upgrade Assistant for RAC databases.
nodes without RAC: Expert advice: Is there any reason that you should NOT employ a shared
Oracle home when you have multiple nodes and a cluster filesystem (and you do NOT use RAC)?
a patchset application in a RAC environment: I currently have several applications on their own
databases. Is it possible to consolidate all these databases and thus applications on a single
database with a RAC environment?
TAF parameters in RAC: We want to use the RAC feature to call Transparent Application Failover
(TAF). How should I configure the TAF parameters?
disadvantages of RAC: What are the disadvantages of implementing Oracle RAC?
costs of running RAC: What are the benefits of running RAC with Oracle database servers running
on Sun clusters? Other than horizontal scaling, are there any other benefits?
instance is a user connected through?: In RAC environments, if an instance goes down other
instances can still access the data. How will it be known which instance a user is connected
way to implement RAC on Linux: I would like to know the cheapest way to implement RAC for
RAC without database downtime: We have Oracle 10g on Red Hat Linux. The database is accessed by
10,000 users, and we need to implement Oracle Real Application Clusters without any downtime. What
can we do?
vs. "active-passive" in RAC environments: Expert Dan Norris explains the difference between
active-active and active-passive configurations in RAC environments.
from 9i RAC to 10g RAC: Expert advice on migrating to 10g RAC.
Oracle president puts best foot forward with grid computing: Amidst a keynote speech littered
with praise for Linux, Oracle president Charles Phillips identified grid computing as the next big
challenge for the open source operating system.
gives grid computing a pragmatic push: A first-of-its-kind reference model from the Enterprise
Grid Alliance (EGA) may become another factor driving the adoption of grid computing.
10g update to feature more automation: If Oracle has its way, the vast majority of database
management functions will soon be fully automated.
answers Project MegaGrid questions at LinuxWorld: Intel's Sunil Saxena answers questions about
Project MegaGrid and discusses how the newest technology from Intel fits into the larger grid
takes grid mobile: New Oracle Database Lite release extends the grid to mobile workers.
Dell to boost grid standards: Oracle and Dell are teaming up with EMC and Intel to develop best
practices around grid computing.
management, grid to highlight Oracle conference: After combining its applications and database
conferences, Oracle executives are bracing for more than 20,000 users to flock to San Francisco
next week for the Oracle OpenWorld user conference.
adds members to grid alliance: Oracle's Enterprise Grid Alliance added three new members and
its first end user to help develop grid computing standards and user-friendly tools.
Enterprise Manager gets a makeover: Oracle has completed its round of 10g Release 2 updates
with the new release Oracle Enterprise Manager.
is newest grid convert: Online retailer Overstock.com looks to empty its shelves and speed up
sales with Oracle 10g.
Learned: Grid computing: This tip covers the how, what and where of grid computing in
embraces grid: The Statue of Liberty-Ellis Island Foundation says Oracle 9i RAC on Linux was
the right combination for them. Now the organization is taking steps to get closer to Oracle's grid
'early adopters' to reap major benefits: Grid computing will take a giant leap in acceptance
within the next few years as better technology ups productivity and reduces costs.
take baby steps toward grid: A Forrester Research survey shows that many companies are taking
steps toward grid computing despite uncertainty about where they are headed.
advice: Grid computing and Oracle10g: SearchOracle.com expert Brian Peasland describes the
concept of grid computing and Oracle Database 10g's role in helping you achieve it in your
rose-colored grid vision: Get inside Oracle's grid strategy, and find out how much of the
technology users can get their hands on right now -- and whether the technology can do everything
Larry Ellison says it can.
between cluster and grid: A user asks, "What is the difference between a cluster and a grid? Is
it a conceptual difference or a technical difference?" Expert Brian Peasland answers.
Oracle10g achieves grid computing: Could you explain in detail with examples what is meant by
grid computing and how Oracle 10g helps to achieve this?
much better is 10gR2 in grid computing?: Brian Peasland describes the improvements to grid
computing in Oracle 10g release 2.
computing -- The future from the past: This tip discusses the past and future of grid
computing, how it has developed and the challenges it will face.
Burleson answers your Oracle availability questions: Highlights from a webcast titled "Using
Oracle9i RAC and TAF for continuous availability."
for high availability: Replication for high availability can be simple and cheap, or it can be
elaborate and expensive. It all depends on what you want to replicate -- and your performance
Database 10g high availability with RAC, Flashback and Data Guard (Chapter 8): This chapter
download from Oracle Database 10g high availability with RAC, Flashback and Data Guard, written by
Matthew Hart and Scott Jesse, focuses on a "DBA-centric" approach to high availability.
Chapter Quiz: Backup and recovery for high availability: How much do you know about backup and
recovery? We challenge you to test your skills.
Topic: Achieving high availability: Oracle RAC, Data Guard, Flashback and Streams are just some
of the features you can use to ensure consistent and constant access to your systems. Here are some
tips to get you up to speed.
- Check for
Oracle availability and tablespace capacity: Checking Oracle for availability requires more
than just a ping or a 'ps -ef | grep oracle' command. Read this tip for more info.
HA and OS options for data warehouse: What are the best OS and high availability (HA) options
for a data warehouse in a RAC environment?
levels and resources: A decade of mismatch: Whatever the name -- Grid Computing, Utility
Computing, the Adaptive Enterprise, the Agile Enterprise, Capacity On Demand -- the concept is very
attractive to organizations.
about partitioning: Brian Peasland describes the benefits in availability and performance that
clustering vs. replication: A case study: The following is based upon a real-life experience in
a Tier 1 bank, using Sybase tools like ASE and Replication Server, but this case is very applicable
to other engines such as Oracle with Data Guard.
applications benefit from Oracle9i RAC?: The applications that benefit the most from RAC are
the ones that need either high availability or higher scalability, or both.
for backup for terabytes of data : We are developing an airline reservation system which should
be a high-availability system and should handle terabytes of data. What is the best strategy for
warehousing possible on a disaster recovery hot site?: Is data warehousing or reporting on a
high availability hot site possible when using DataGuard in a standby disaster recovery replication
about partitions, indexes and parallelism: How do partitions help with availability?