- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: Oracle Data Guard
Operating System - HP-UX
1753687
Members
5644
Online
108799
Solutions
Forums
Categories
Company
Local Language
юдл
back
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
юдл
back
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Go to solution
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-28-2004 01:22 AM
тАО05-28-2004 01:22 AM
So, as far as hardware requirements go, do you have to have a server as big or bigger as the one that houses the primary to house the standby database?
Also, say I have 2 regional servers that serve as primaries themselves. Is it feasible to have those 2 "back each other up" as standby's, each one keeping a synchronized copy of the other one's database in the background to it's own primary one?
Also, say I have 2 regional servers that serve as primaries themselves. Is it feasible to have those 2 "back each other up" as standby's, each one keeping a synchronized copy of the other one's database in the background to it's own primary one?
Solved! Go to Solution.
2 REPLIES 2
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-28-2004 01:27 AM
тАО05-28-2004 01:27 AM
Re: Oracle Data Guard
You need an equal amount of disk space though not necessarily the same server type and resources.
If you want instant takover, you need a machine that can handle your normal production load at least for a while.
SEP
If you want instant takover, you need a machine that can handle your normal production load at least for a while.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-28-2004 04:35 PM
тАО05-28-2004 04:35 PM
Solution
hi,
below a few clarifications about the Data Guard.
If you are trying to implement data guard. You will have to choose between the 4 modes to data guard:
a. Guaranteed: "when we cannot get the redo to the failover site when we commit -- STOP, FAIL, HALT". Two phase commit like protection. either both or neither are updated.
b. Instant: "when we cannot get the redo to the failover site when we commit -- don't stop, don't fail -- rather fall back into using archives, notify the DBA, make OEM flash red, get the problem fixed ASAP". when all things are working normally, standby is upto the second. when something breaks in the connectivity between the two -- SOUND THE ALARMS, but don't stop production
c. Rapid: Caution: running in rapid mode when the standby is unavailable -- is sort of like running with a failed mirror disk in mirrored pairs. You can still write to the disk but if the disk fails -- you no longer have a mirror do you. It is up to you whether you want to continue or you want to stop.
d. delayed
In general, data guard is providing two things:
a. extremely high levels of data assurance. If it was committed, we got it.
b. a failover site that can be failed over to AS SOON AS A standby site for it is constructed (makes no sense to fail over if your requirement is to have two copies AT ALL TIMES)
hope this helps too!
regards
Yogeeraj
below a few clarifications about the Data Guard.
If you are trying to implement data guard. You will have to choose between the 4 modes to data guard:
a. Guaranteed: "when we cannot get the redo to the failover site when we commit -- STOP, FAIL, HALT". Two phase commit like protection. either both or neither are updated.
b. Instant: "when we cannot get the redo to the failover site when we commit -- don't stop, don't fail -- rather fall back into using archives, notify the DBA, make OEM flash red, get the problem fixed ASAP". when all things are working normally, standby is upto the second. when something breaks in the connectivity between the two -- SOUND THE ALARMS, but don't stop production
c. Rapid: Caution: running in rapid mode when the standby is unavailable -- is sort of like running with a failed mirror disk in mirrored pairs. You can still write to the disk but if the disk fails -- you no longer have a mirror do you. It is up to you whether you want to continue or you want to stop.
d. delayed
In general, data guard is providing two things:
a. extremely high levels of data assurance. If it was committed, we got it.
b. a failover site that can be failed over to AS SOON AS A standby site for it is constructed (makes no sense to fail over if your requirement is to have two copies AT ALL TIMES)
hope this helps too!
regards
Yogeeraj
No person was ever honoured for what he received. Honour has been the reward for what he gave (clavin coolidge)
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP