Dataguard concept question (data loss?)

Hi!
On the primary side I have:
- mirrored redo log files
- archiver creates a archiving file every 30 minutes for example
- archive file gets transfered to to standby system
On the standby side (physical or logical) gets updated when it receives an archive file.
Lets descuss following szenario:
What happens if my primary systems fails and the current redo file isn't archived yet? Do I have now a data loss or can I somehow recover my standby system with the mirrored redo log file of my primary system?
Thanks
Markus

If you are using one of the less protective DataGuard protection modes, yes, it is possible to have data loss. Since DataGuard is protecting you from disasters, the assumption is that if you lose the primary database server, you've lost all the online redo logs. So in your setup, you'd have 30 minutes of data at risk. If that is unacceptable, you can certainly use a different protection mode. In the maximum protection mode, redo is applied synchronously on the standby.
Justin
Edited by: Justin Cave on Jun 18, 2009 5:20 AM
Or more succinctly: What Hament said

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I am very new to JDO and Kodo and I am still learning. I have a user
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Thank-you in advance for reading all of this.
A slip of the mouse in trying to return to the left-most tab caused the tab groups feature to take over the window. I completely failed to comprehend what I was looking at and closed the thing by clicking the x because I damn sure didn't want what I was looking at. Undo close group? Of course not, I didn't want a group in the first place. Hey! My tabs are completely gone now! So in just a few steps all of which seemed innocent, I have lost all but ten of the tabs that were open, and those were only the most recent ten (and actually older tabs would have been more valueable than newer so insult on top of injury).
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Fellow users, if you know of a way to recover all 50 lost tabs from an "undo close tab group incident", I would be grateful for that advice, but I would still believe the feature should be deleted. Some of the tabs have been retained for months so digging them out of the history is not practical.

I am not 100% certain but I am fairly sure development of this tab feature has ceased and it is likely to be deprecated. I am even less sure what the replacement will be.
Thus forum is not the place for discussing development issues or feature requests. (Developers do not use this site)
*You could comment using feedback <br /> https://input.mozilla.org/en-US/feedback
*Or try to find a developers forum or mailing list <br /> http://www.mozilla.org/about/forums/#general-development
I have not tried this and am not even using Windows at present but the tabs groups are stored as entries in the sessionstore.js files. Firefox has such a file plus sometimes numbered copies and a backup copy. Firefox will have re-writen these files but I suppose there is a posibility the Windows OS may have kept copies.
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* http://kb.mozillazine.org/Sessionstore.js Note the files are kept within the Firefox Profile
** Firefox Button -> Help -> Troubleshooting [open profile] (or some thing similar) is one method of locating the profile.
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Hi Gurus,
I am new to this forum and happy to be a part of it.
Can someone help me in posting " Dataguard Interview questions and most frequeently asked DG issues" as i am preparing for the interviews.
And also share the enhancements to DG in 11g.
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2. What is the difference between vanilla Data Guard and Active and Snapshot?
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4. Who is Larry Carpenter and why should you care?
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Hi,
I am facing data loss when I am trying a transformation for a DB to DB mapping in ODI.
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source table code:
CREATE TABLE "DEF"."SOURCE_TEST"
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inserted data:
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So, first you have data in "DEF"."SOURCE_TEST".
You then run your interface, and the data is moved into "ABC"."TARGET_TEST" if the interface executes successfully with no errors.
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If you haven't already, I'd encourage you to take a look at the documentation on this:
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Doubt in Dataguard concept

Dear all,
Please help me regarding this i am very much confused.....
I had couple of doubts in dataguard concepts.
1)When archive log is transferred from primary to standby ,
a.Whether DBWR will be in active state or not in standby server.To write the contents in the archived redo log files which came from the primary to the datafiles of the standby server.
b.I am using online redo logs in the standby server not standby redo logs , whether online redologs in the standby server will have any effect in shipping of redologs from the primary database,
c. In my standby database online redo logs state is changing between CLEARING AND CLEARING CURRENT.How standby server redologs will change it state,
Regards,
Vamsi.

Hi again,
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Online redo logs
Every instance of an Oracle primary database and logical standby database has an associated online redo log to protect the database in case of an instance failure. Physical standby databases do not have an associated online redo log, because physical standby databases are never opened for read/write I/O; changes are not made to the database and redo data is not generated.
Create an Online Redo Log on the Standby Database
Although this step is optional, Oracle recommends that an online redo log be created when a standby database is created. By following this best practice, a standby database will be ready to quickly transition to the primary database role.
...

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can anybody explain about the summary level and higher level concepts in data warehousing?

If I understood your question:
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OLAP and cubes tutorials
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Marcos

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Dear All,
Yesterday while using the Manage data function in HFM we encountered a large amount of data loss. Let me explain.
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Hi there,
Then I will agree with Eric... and I have also just noticed that you have used the Replace option in your screen which definitely has cleared all the accounts before loading the new data.
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Java Usage Concept Questions

I have a java Command line running program. Which allow input/edit data of clients and store them into a Flat file. The problem is that i have to make a GUI, ( a thin web based client ) and using only HTML and Javascript.
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Now my concept Questions:
1. Is it possible to communicate to a Java Program using HTML and Javascript? If so, any exampler, pointers?
2. I was thinking of using HTML and Javascript to directly modify the Database. ( Since it is a flat file therefore nothing more than a txt file ) But isn't this side stepping the problem?
3. If i could modify the Flat file using HTML and Javascript only. Why would i need JSP and Servlets? And if i could do it with JSP and Servlets only why would i need the think client ( HTML bit )?
If all of above 3 are correct ( conceptialy ), what is the orginal command line java program for?
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Hello,
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Javascript - Is usaually used for client side validation and some cool effects.
JSP - Is a scripting language that allows you to execute code on the server to create dynamic content and server side stuff like saving to a DB or a file
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Can I just close disk utility without risking data loss or drive problems?

I am using disk utility's restore to clone a hard drive to an external drive but it is taking forever (telling me 3 days) and the cancel button won't work. Can I just close disk utility without risking data loss or drive problems? Force quit? Anyone have experience with this?
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Question 1
What types of changes to the classes (and to the database using schematool)
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Question 2
I know from db days that certain db changes result in the tables being
wiped. Will schematool warn of potential dataloss before it changes the
database tables?
Question 3
Is there anyway of handling changes that would cause a data loss manually?
Thanks.

What types of changes to the classes (and to the database using schematool)
could result in data in existing tables being lost?If you use the "add" action on the schema tool (rather than "refresh" or
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not a concern). There are other obvious cases too (running "drop" on a class).
Bottom line is to use the "add" action if you're worried about the tool
dropping anything.
I know from db days that certain db changes result in the tables being
wiped. Will schematool warn of potential dataloss before it changes the
database tables?The tool does not perform any changes that result in clearing tables. It
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So add to my question below, a how to for getting data from existing devices to cloud w/o having cloud erase files and data from devices...
I'm just setting up. I want to go into this cloud thing slowly, starting with just calendar syncing.
I go to settings: Documents and Data and click it off. I get a pop up witch says "All documens and Data stored in iCloud will be deleted from this iPad"
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S.
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Unless you have signed up for AT&T's international roaming for phone calls, I suggest putting the device into Airplane mode. That is what I did when I did the 3 day Bahamas Cruise. And to support what AmishCake said, the cruise lines charge for their wi-fi. Generally a daily 24-hour charge, or they will have a special for the length of the cruise, but it is pricey.

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I reported this bug back in iTunes 10.4 and it STILL EXISTS in iTunes 10.5b48. So beware of using this feature, even in the upcoming version of iTunes.
iTunes should NEVER delete your files without warning no matter what! Not under ANY circumstances!

Since this is an iTunes question, it might be better to post in the iTunes for Windows forum.
http://discussions.apple.com/forum.jspa?forumID=800&start=0

Dataguard concept question (data loss?)

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