About Backup and Recovery in a distribuited enviroment

Hi.
I've read that if you more that one DB (say 2) connected in a distribuited enviroment, all DBs must be recovered in case one of your DBs fails.
I'd like to clarify the folloiwng issues:
- It that 100% true, i mean isn't an exception to that rule?.
- What happens if one DB is in archive mode and the other is not?
- Why do i have to restore both DBs if there's one one in trouble?.
- Isn't there a way to tell recovery process that you don't want restore or apply the distributed data, since you know that data is already there (at least in the case of complete recovery)?
Thanks in advance ...!

I couldn't find much info on the topic for 9i (you don't mention your version), but found this in the Backup and Recovery Concepts manuls:
"If the database is a member of a distributed database system, then all databases in the system should operate in the same archiving mode. Note the consequences and constraints contained in the following table.
Mode Constraint Consequence
ARCHIVELOG
Closed cleanly
Backups at each node can be performed autonomously, that is, individually and without time coordination.
NOARCHIVELOG
Closed cleanly
Consistent whole database backups must be performed at the same global time to plan for global distributed database recovery. For example, if a database in New York is backed up at midnight EST, the database in San Francisco should be backed up at 9 PM PST."
Therefore, I wouldn't recommend having one database in archivelog mode and the other not. As far as your last question is concerned, I'd say that Oracle won't try any recovery if there isn't a need for it (if the data is already there), but that could be tested to confirm. I think that you need to read carefully the RAC concepts manual, and try some backup/recovery scenarios hopefully on a test box.
Daniel

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Does any one have good idea about the backup and recovery georaster table?

Does any one have good idea about the backup and recovery georaster table?
Best Regards,
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Edited by: ylin on 2009-10-10 上午2:07

for backup and recovery, please follow the standard procedure of general database backup and recovery. you need to backup both the georaster table and all related RDT tables.

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Dear Expertise,
Recent set up SharePoint server 2013 Enterprise, and looking for backup and recovery solution, does the built in Windows Backup can handle it, and how?
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Hi,
According to your post, my understanding is that you wanted to know some backup and restore solution for SharePoint 2013.
There are two Technet articles about the backup and restore, you can have a look at them.
http://technet.microsoft.com/en-us/library/ee428315(v=office.15).aspx
http://technet.microsoft.com/en-us/library/ee662536(v=office.15).aspx
You can also use some third-part software tools to achieve the same scenario.
http://www.avepoint.com/products/sharepoint-infrastructure-management/data-protection/
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Issue with backup and recovery of WLS

I have installed WLS 10.3.6 in my 64-bit Linux box, now I am trying to take backup my server. I have a web-application deployed to my WLS, the path to my war file was something like:
<home_dir>/install_files/myapp.war
Now to take backup I ran tar command on my current Linux box, now I copied the .tar files to my new Linux box and extracted it. When I am starting my weblogic server it is looking for the war file from the path <home_dir>/install/myapp.war which does not exist on my new machine. So I logged into Admin console of WLS on my new machine and trying to change the path for myapp.war by clikcing update button. But I am getting this error when I change the path:
weblogic.management.ManagementException: [Deployer:149007]New source location, '/u01/Oracle/install_files/myapp.war', cannot be deployed to configured application, 'myapp'. The application source is at '<home_dir>/myapp.war'. Changing the source location is not allowed for a previously attempted deployment. Try deploying without specifying the source.
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Please help me how to deploy my files. I'm expecting backup and recovery option should also take care of deployed files but it is not happening in my case, is that wrong?

1. There is no specific order, but last to go down should be CMS and first to come up should be CMS.
@echo off
Stop Business Objects Services
echo
net stop "BOBJCrystalReportApplicationServer"
net stop "BOBJEventServer"
net stop "BOBJProgramServer"
net stop "BOBJOutputFileServer"
net stop "BOBJProcessServer"
net stop "BOBJInputFileServer"
net stop "BOBJDestinationServer"
net stop "BOBJCrystalReportspageserver"
net stop "BOBJJobServer_Report"
net stop "BOBJCentralMS"
exit
Similarly to Start services, instead of stop use start and put CentralMS at the top and save it as a batch file.
2. Jobs running when the server goes down will fail, other recurring jobs will wait till the server comes up.
3. Yes, backup File Store & Database.
4. Not sure about the default password for My SQL, you should be able to backup the MySQL database, I have done that once.
5. Backup FileStore & Database.

Oracle Backup and Recovery 101: where can I get more information?

Hey everyone. I'm a pretty new Oracle DBA and backup and recovery is something I want to learn as much about as I can.
I read a blog about "how to be a good DBA" and it really drove home the importance of backups. I know how important they are, I just want to learn more.
What I mean is, I understand a lot of the high level concepts. It is pretty much straight forward. What I am looking for is something that really goes down in the internals of what is going on behind the scenes so I know what is going on.
I thought it would be extremely beneficial for me to learn about user backups. Granted, RMAN is the direction my company is heading to, but right now, we are doing user made backups. My thinking is that if I can get a solid grip and understanding of backup and recovery, user made backups, it will make the transition to RMAN much easier. That way, when I am working in RMAN, issue a command to do backup, I know the equivalent of a user backup and what is going on.
I hope that makes sense.
Is there a recommended book that goes over backup and recovery in depth?
I'd like to learn about all the user-made backup commands that can be executed at the command line (example, putting a tablespace in backup).
Since backups are essential to the life of a DBA, I thought the more I know, the better off I would be.

You can always find good information from Oracle document site,
Oracle® Database Backup and Recovery Basics
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/toc.htm
Oracle® Database Backup and Recovery Advanced User's Guide
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/toc.htm
User managed backup is quite different from RMAN backup. For RMAN backup you need to get familiar with the RMAN command syntax and configure.

Need clarification for cold backup and recovery

Hello Everyone ..
I have much confusion on cold backup and recovery topic.
Already i posted a scanario regarding this and i want to know some clarity points to understand.
1. I had cold backup two days before
2. I am creating an object *(EMP)* and inserting some records then issue log switch continiously.
3. Manually i removed all physical files (datafiles , control files , log files , redolog files ...)
4. then i issued STARTUP FORCE MOUNT;
5. here i am getting error identifying control file.
6. cold backup two days before all files restored
6. then i issue recover database using backup controlfile until cancel;
7. i am trying to issue select * from emp; i am getting error
select * from emp
*ERROR at line 1:
ORA-00942: table or view does not existMy QUESTION IS
After cold backup finished , i created emp table ..
when restoring old back " There is no emp table"
*- then , can i recover emp table ? - If so , please explain about this ..*
Note : REF - LINK https://forums.oracle.com/forums/message.jspa?messageID=11056341#11056341
- Above link says what i did ? . In this thread i am asking concept & logic ..
please do NOT consider as "*DUPLICATE*"

When you recover the database using backup controlfile until cancel, you have to apply archived logs. Did you apply all of them?
If the create command was in the online redo, not yet archived, and you lost the online redo, then you won't have it. This is why you want to have redo multiplexed, it is a critical piece.
In some recovery scenarios, if you haven't lost the online redo, you need to specify those files as if they were archives.
It is normally easier to just be sure you have the latest controlfiles and let Oracle figure it out automatically (which is why you want to use online RMAN backups rather than cold backups). But yes, it is important to understand what is going on for different scenarios. I used to have manual standbys, and one of the disaster instruction sets explained to try to get online redo over to the standby to lose as few transactions as possible. That could still be useful for some snapshot hardware type scenarios, assuming the business is too cheap to do proper failovers.

Which one is the Best Backup and Recovery Method in your point of view?

Friends,
Currently we are taking hot backup with archive mode.
we have backup script to copy the datafile and we will copy the archive files in a separate folder.
alter tablespace system begin backup;
host cp /u01/app/oracle/oradata/livedb/system.dbf /u02/online_backup
alter tablespace system end backup;
like the above script we will copy all the other data files.
then in the test environment. we will copy the datafile and archive file.
we will be recovering by using the below statement.
sql>recover database until cancel using backup controlfile.
currently no problem in backup and recovery.
What i want is......
is there any other sophisticated and safe way to take a backup and restore it to another server?
if yes, can anybody point out the steps or link.
I have heard about......
DataGuard
RMAN
EXP/IMP
but i never used the above.
Thanks
sathyguy

DataGuard
RMAN
EXP/IMP ...
The only real backup/recovery method here is RMAN, Oracle's integrated backup/recovery tool, which I prefer. As an example for a fully functional RMAN command see 'backup database plus archivelog delete all input'. This statement provides a complete hot database backup including archivelogs and deletes at the successful end all archivelogs in all destinations . Compare this statement with all the steps necessary to do the same job manually. Don't worry you have many ways to finetune your backup.
For more informations there's a quick start guide:
http://download-uk.oracle.com/docs/cd/B19306_01/backup.102/b14193/toc.htm
Dataguard is a high availibility tool, which provides a kind of backup in terms of having a logical or physical standby database. When primary side fails you can switch to this standby database. Such a constellation does not mean, database backups are no longer necessary.
Export/Import is a logical backup, still often used to recover from human errors (you accidentally dropped a table for example). Don't use it as a replacement for physical backups, especially hot backups,in case of media failures you always will have loss of data, because changes made afterwards the export are not captured.
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Werner

Oracle 10g backup and recovery

Hi
Can you guys give me some resource of oracle 10g backup and recovery. I want to learn about oracle 10g backup+recovery. Plz help

Best resource is Backup and Recovery guide from Oracle document site.
Backup and Recovery Advanced User's Guide
http://download-west.oracle.com/docs/cd/B19306_01/backup.102/b14191/toc.htm

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Hi ,
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Looking forwrad for your responsce ..
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Nitin

rajeysh,
I do agree with you on the book and the online docs but nowadays i do think that the oracle online documentation could have wrong or misplaced information. So reading the online documentation along with a book that has some hands on experience parameters should be the best solution. Also you can support the knowledge by searching the internet.
Regards.
Ogan
Edited by: Ogan Ozdogan on 19.Ağu.2010 13:46
Dear 789393,
What you can possibly do is go to the amazon and search for RMAN. See the results and search web and comments about those specific books. You can purchase whichever you want that meets the criteria of yours.
Regards.
Ogan

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Hi, oracle guru.
I have searched in google how to backup and recover to and from removable disk or hard disk (in separated folder) in oracle XE 10g, but I didn't found any.
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Unfortunately, when I copy the previous backup (the one with complete users) to oracle folder, the restore database does work until, I guess starting database, it throws error saying that something error in SYSTEM.DBF, thus making my oracle doesn't work, even I canot go to database home page.
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Thanks for the reply.

Yes, as I already mentioned, previously (assumes) that I have database with several users (say 5 users). And I use backup database and restore database from oracle folder in start menu, and it works perfectly (assuming that I delete one user and then restore database).
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Backup and recovery a tablespace

Hi all,
I recently started reading about oracle backup and recovery concepts, and I needed to understand what is happening where we put a tablespace to a backup mode (alter tablespace tablespace_name begin backup) ?
thanks for help

Three things happen when you put a tablespace in hot backup mode:
1. A checkpoint is issued, so that dirty blocks belonging to that tablespace are flushed to disk
2. The header of the datafiles associated with the tablespace are locked from further update by CKPT.
3. The first insert/update/delete that affects a data block that is part of the tablespace being backed up, after the 'begin backup' command is issued, causes the entire block to be written to the online redo logs. Second and subsequent changes generate the same amount as redo as normal, though.
That's it. As Hemant mentions, the really important bit is number 2 in that list: whilst the header of the datafile(s) is locked, the datafiles themselves are not, and are written to as much as they always are. The idea that somehow the datafiles are not written to and that the redo logs are the only place that stuff is written to during the backup is completely and utterly wrong. CKPT is not allowed to write to the header, because that way, we know the earliest "age" of the datafile copy when it went into backup mode, and thus know the point from which redo needs to be applied during a recovery. But DBWR writes to the rest of the datafile perfectly normally.
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Backup and Recovery of Enterprise

I've inherited an instance of Enterprise XI R2, and have discovered that it is a critical system, but is not being backed up. I'm new to this, please bear with me.
I found the backup and recovery guide (https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c09a069c-6a3f-2b10-3399-e0ed04d866f8), and it gives a good high level overview, but I need a little more info.
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2. I assume that when the servers are down, anything scheduled to run during that time will be lost. i.e., the server won't check for missed jobs caused by the stopped state once the it resumes, correct?
3. The only thing that I need to back up on the file system is the contents of FileStore (C:Program FilesBusiness ObjectsBusinessObjects Enterprise 11.5FileStore*.*), correct?
4. This looks like a vanilla install using MySql. Would anyone be willing to share their MySql backup scripts? Is there a default password for MySql? How can I determine this password? How many databases are there?
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Thanks!!!

1. There is no specific order, but last to go down should be CMS and first to come up should be CMS.
@echo off
Stop Business Objects Services
echo
net stop "BOBJCrystalReportApplicationServer"
net stop "BOBJEventServer"
net stop "BOBJProgramServer"
net stop "BOBJOutputFileServer"
net stop "BOBJProcessServer"
net stop "BOBJInputFileServer"
net stop "BOBJDestinationServer"
net stop "BOBJCrystalReportspageserver"
net stop "BOBJJobServer_Report"
net stop "BOBJCentralMS"
exit
Similarly to Start services, instead of stop use start and put CentralMS at the top and save it as a batch file.
2. Jobs running when the server goes down will fail, other recurring jobs will wait till the server comes up.
3. Yes, backup File Store & Database.
4. Not sure about the default password for My SQL, you should be able to backup the MySQL database, I have done that once.
5. Backup FileStore & Database.

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Join us at 2:00pm Pacific time for a LIVE video tutorial of how to prepare for system backup and recovery! The video features HP experts who work with the products every day!
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#test

Windows 8.1 recovery problem and install dell backup and recovery software...

i had upgrade my windows to 8.1, the problem is that i cant install Dell backup & recovery, when i installing and updating PE I get FACTORY SETUP ERROR 5
is there any technical help me please...thx
however...its cant recovery or reset my laptop back to factory image...
just like this photo...
recovery cant... refresh also cant...

Same problem here: windows 8.1, dell backup and recovery 1.6.2.4. During the installation, when the box of "updating PE environment" appears, i get "factory error 5"
Is there any solution?
Regards

Logical backup and recovery using export/import

Hi,
Anyone provide me the clear steps and command to take logical backup and recovery using the import and export method...??.
im using oracle 9i database and redhat linux server version 4.0.........???.
thanks,
vasanth.......

user12864080 wrote:
Hi,
Anyone provide me the clear steps and command to take logical backup and recovery using the import and export method...??.
im using oracle 9i database and redhat linux server version 4.0.........???.
thanks,
vasanth.......Vasant,
Though you have got links already for using the exp/imp , I would strongly suggest that when you mention backup/recovery, RMAN is the tool that you should be using. Exp/imp is/was never considered as a backup tool. You should read this paper to get the answer of "why rman" ?
http://www.evdbt.com/TD_Rman.pdf
Aman....

About Backup and Recovery in a distribuited enviroment

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