Backups when using flashback recovery

Sorry I searched on this but found no hits.
Perhaps I'm confused but would appreciate if anyone could enlighten me.
If the flashback recovery area is configured on ASM how do you backup to tape when the OS can not 'see' anything other than the physical drive?

Do not forget that , once you are using ASM to store your database files , RMAN is the only method for performing backups of your database.
you then have to configure SBT channels (with vendor specific parameters) to do your backup on tape ; note that all this is very simple if you use a network backup server such Legato Networker ...
Regards
Marc.

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Can I use a SD Card rather than a USB stick when using Lion Recovery Disk Assistant

I'm using a MB Pro 2010, can I use a SD Card in the SD Card slot rather than a USB stick when using Lion Recovery Disk Assistant. I would like to use the 16GB chip with a single 1GB partition so I can dump a bunch of other backup stuff into the same chipper.

Yes, you could certainly do that, provided you have a card reader or an SD card slot available on both Macs and what you are copying is smaller than the capacity of your SD card.
But that's an awfully slow way to transfer GB's of files. 32GB SD cards cost anywhere from about $20 to $90 and of course the cheaper cards will be the slowest cards. Also need to consider that your iPhoto, iTunes and especially iMovie libraries may be larger than your SD card's capacity, and there is no easy way to 'split' them to save partial libraries and reassemble them on your new Mac.
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How incremental backup is used in recovery

Hi,
how incremental backup is used in recovery let's say i took full backup on sunday then monday tuesday, wednesday took incremental backup. now on wednesday DB crash. so how incremental backup will use in recovery as i understand DB will restore from full backup then archive and increment backup will apply for recovery?
please correct me if i am wrong.

1) Backup FULL RMAN Level 0 - Sunday
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3) Backup Archives
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The only way you can install Lion is if you have purchased a coupon to download Lion or if you have the Lion installer on a USB flash drive.
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Disable iDevice backup when using WLAN sync

Hi everyone,
when syncing an iPhone/iPad/iPod iTunes will automatically create a backup of the device which is nice. I usually sync via USB which is reasonably fast. But sometimes I use the option to sync wirelessly which is fast enough only if you skip the backup. I know that you could disable device backups using
defaults write com.apple.iTunes DeviceBackupsDisabled -bool true
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I completely agree with you. The auto-backup is a horrible waste of time. I can understand doing it once a month, or maybe even once a week, but given the fact that EVERYTHING in iTunes is backed up in at least two ways without any user input (hard drive & iTunes purchasing record) this long and obnoxious step is several degrees past overkill.
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Are the iPod Touches really that unstable?

How risky is it to skip a backup when using bootcamp?

I simply dont have anywhere (space wise) to backup to, and I need to dual boot Windows 8.1 to run AutoCAD for college.

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Clinton

Backup when using MacHD and and External Drive

Hi
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bishan

Hi Bishan,
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[email protected]

Trying to ... Restore files from MINWINPC folder using HP Recovery Manager

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ORA-01194 and ORA-00604 when using backup controlfile set #2

Database version Oracle 11.2.0.1
Enterprise Linux 5.4
Database is in archivelog mode.
I'm trying to recover a database according to set #2 of a backup controlfile to trace. Creating the controlfile works fine, but recovering the database fails.
From what I can gather, the recovery fails because it cannot roll forward - sequence 39 is in the missing online redo logfile. However, the database is opened with the restlogs option, and I understand that it should use the archivelogs in order to roll backwards. Since this is a new controlfile it does not know about archivelogs, but it does not accept to register or use any archivelog files.
The recovery as outlined in set #2 does not seem to work as advertised. Any ideas?
Following errors:
SQL> CREATE CONTROLFILE REUSE DATABASE "RCAT" RESETLOGS ARCHIVELOG etc.
Control file created.
Tyring to register on of the archivelogs does not work:
SQL> ALTER DATABASE REGISTER LOGFILE '/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc';
ALTER DATABASE REGISTER LOGFILE '/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc'
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level
Applying an existing archivelog during recovery does not work:
SQL> recover database using backup controlfile until cancel
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc
ORA-00310: archived log contains sequence 33; sequence 39 required
ORA-00334: archived log:
'/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc'
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: '/u02/RCAT/datafile/o1_mf_system_6959kz7l_.dbf'
ls -l /u02/fra/RCAT/archivelog/2010_09_19:
-rw-r----- 1 oracle dba 49313280 Sep 19 00:01 o1_mf_1_33_69bfo5tx_.arc
-rw-r----- 1 oracle dba   312320 Sep 19 00:03 o1_mf_1_34_69bft63b_.arc
-rw-r----- 1 oracle dba 20343808 Sep 19 02:10 o1_mf_1_35_69bo6y6j_.arc
-rw-r----- 1 oracle dba    40960 Sep 19 02:12 o1_mf_1_36_69boc9t8_.arc
-rw-r----- 1 oracle dba    20992 Sep 19 02:13 o1_mf_1_37_69bofng4_.arc
-rw-r----- 1 oracle dba   794624 Sep 19 02:15 o1_mf_1_38_69bokwbf_.arcThanks,
Markus

Specifying sequence 39 results in the same error message, which is what is what it tries to apply when using "recover until cancel" and typing cancel. But the problem is that sequence 39 was in the online redologs, which were not archived yet.
SQL> select name, first_change#,next_change# from v$archived_log;
NAME                                        FIRST_CHANGE# NEXT_CHANGE#
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_34_69bft63b_.arc        1259096     1259295
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_37_69bofng4_.arc        1269876     1269935
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_35_69bo6y6j_.arc        1259295     1269766
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_36_69boc9t8_.arc        1269766     1269876
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_38_69bokwbf_.arc        1269935     1270557
/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc        1241003     1259096
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_21_699l4tkj_.arc        1215727     1215730
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_24_699s5pj8_.arc        1215736     1224966
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_26_699s5rp4_.arc        1224969     1224972
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_15_6987rbqp_.arc        1174393     1174511
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_23_699l4xng_.arc        1215733     1215736
NAME                                        FIRST_CHANGE# NEXT_CHANGE#
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_28_699s5tqt_.arc        1224975     1224987
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_22_699l4w5r_.arc        1215730     1215733
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_29_699s5vw2_.arc        1224987     1224990
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_19_699l4or0_.arc        1215721     1215724
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_25_699s5qd6_.arc        1224966     1224969
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_30_699s5yvs_.arc        1224990     1224999
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_27_699s5stf_.arc        1224972     1224975
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_32_69b2hgvz_.arc        1225003     1241003
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_17_699k5oxl_.arc        1194778     1209476
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_16_699jsxol_.arc        1174511     1194778
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_20_699l4rx2_.arc        1215724     1215727
NAME                                        FIRST_CHANGE# NEXT_CHANGE#
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_18_699l4msq_.arc        1209476     1215721
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_14_6987mljx_.arc        1162149     1174393
/u02/fra/RCAT/archivelog/2010_09_18/o1_mf_1_31_699s61sr_.arc        1224999     1225003
25 rows selectedHow does it actually know about all the archivelogs?
Edited by: Markus Waldorf on Sep 20, 2010 8:37 AM

Corrupt data error when using Windows backup on Oracle

Our SAP servers include a SDLT internal tape drive that we use for doing a complete system backup. When using Windows Backup we get the following message in the backup log:
WARNING: Portions of "\oracle\T00\sapdata1\protd_2\PROTD.DATA2" cannot be read. The backed up data is corrupt or incomplete.
This file will not restore correctly.
This is occuring on a couple of different systems but the wierd thing is when this happens in occurs on one Oracle drive in one system and the other Oracle drive on another system i.e. the G: drive on our TST sysytem and the E: drive on another. The E: and G: drives contain the main Oracle datafiles.
Has anybody ever encounter something like this and what can I do about it?
Thanks;
Gale S.

Especially no backup tool would know about the
fact
that a Oracle block had been changed after it was
copied.
Now I have to contracdict
There are backup tools (e. g. OpenFile Manager from
Legato/EMC), that track the filesystem changes and
makes sure, the backups are consistent in sense of
filesystem blocks. We´re backing up some ORA
databases (non-SAP, 7.3.4 and 8.1.7) for ages now -
and I never saw this kind of corruptions.
Well, these Backup-Tools do perform copies I/O-Consistent. That's different than DB-Block-consistent in the first place. Anyhow due to the fact that the DBMS do have a syncronizing between I/Os and writing out the blocks this leads both to consistent blocks.
I just wonder, how the database would deal with such
"inconsistent" files. Given the fact, you start a
backup at filesystem block 0, the database is being
backed up and a transaction is committed and
something is written to block 100, 200 and 500. The
backup is on block 300. If you now restore the
database, it has the already commited block 500 in
the file but 100 and 200 are not yet written in the
database file. The redo will then find an already
commited transaction on 500. What magic will tell the
engine, that this is due to an online database
backup? I mean, if you set the tablespace to backup,
the engine "knows" the state - but if you just backup
the file, the engine is unaware of that... I´m just
curious how this is handled...
Well the trick here is: we tell the database before we plan to copy the data. When a ONLINE backup is done, the tablespaces are set into BACKUP mode. This changes two things for us:
1. The datafile headers of these tablespaces are not updated anymore although dirty blocks are still written out to these files. Since the control files that keep the SCN (system change number) are updated nevertheless, the database will know at recovery time that these files had been in online backup mode and do need recovery to become consistent again.
2. The UNDO-information is not only written out to the UNDO/ROLLBACK-Tablespace but additionally to the REDOLOGS. So, for the time where the tablespaces are in BACKUP mode, we have all information needed to make a block consistent again - regardless if a transaction had been commited or rolled back - in the redolog. So a full recovery of all changes is possible with
that.
That's basically the "magic" behind this.
If the copy of the datafile is done without this - well, then there's no magician in the world that would been able to get it consistent again. Online Backups with Oracle are only possible with BACKUP mode or RMAN (ok, and possible some 3rd party hacks...).
KR Lars

How to use Flash recovery area only for flashback database feature

I would like to use flash recovery area only for flashback database feature, which means, flash recovery area will store only flashback logs.
I dont want to use that file system for any other files, like archive log files, database backups, control file copies, multiplex redo log, etc
is it possible? I want to use this feature only for flashback database option and hence i dont want to disturb any existing configuration in my database
including backup jobs. Is it required to store archive redo log files also in flash recovery area to use the flashback database feature?
I certainly can't afford to have a copy of entire database in this file system as size of my DB is more than the flash recovery area file system I have.
Thanks
Sarayu

user13312943 wrote:
Aman,
I think i was not clear in my question. Let me try again
My only requirement is to use flashback database feature (or be prepared to use if required). I dont want to create a large file system to use this FRA to store all these files. Out of all the files being stored here copy of data files seems to be consuming more space. I see these files are classified as transient and permanent files. I am okay with permanent files. I fear that this file system may consume more space if i store backup files on disk. I want database backups to go to tapes, not to the FRA disk. Is it possible?
Thanks for your reply
Okay, well in that case you can use RMAN and push the backups to the tape drives. FLB logs would be stored on the FRA.
Aman....

Why cant the controlfile be in sync, when using backup controlfile

hi all,
i understand a few point ...from a dba friend of mine..
you need a resetlog to sync the datafile headers and the controlfiles
1) you need a resetlog when doing incomplete recovery
2) you can recovery completely using a backup controlfile provided you have all the necessary archived logs and online redo logs.
3) but in order not to do resetlog after 2) , you must re-create the controlfile
my questions are
q1) are the following point above true ?
*q2) why cant oracle update the controlfile when recovering using the backup controlfile ? in that case, i do not need to recreate a controlfile , isnt it ?
Rgds,
Noob

user12050668 wrote:
hi hermant,
q1) why would i need to open the database with resetlog ?
Yes. i am using a backup controlfile, but i have all the archived and online redologs till point of failure ?
The purpose of a resetlog is to sync the controlfile and datafile headers , isnt it ? but i do not need to sync, as i have all the latest applied
am i right ?
If you use RECOVER DATABASE USING BACKUP CONTROLFILE in this case control file type is *"BACKUP"* but not *"CURRENT"* due to even you have all archivelogs and online logs you have to open database RESETLOGS statement.Actually after applying all archive and online redo logs ALTER DATABASE OPEN RESETLOGS internally sync and "Say" to control files "RECOVER FINISHED".Because CF type is BACKUP.
q2) You need to OPEN RESETLOGS. You can choose to create controlfile OR not create controlfile (i.e. open with the backup controlfile that was used for the RECOVER).
If you do a CREATE CONTROLFILE it has to be CREATE CONTROLFILE RESETLOGS, followed by ALTER DATABASE OPEN RESETLOGS.
in what circumstances, would i need to re-create the controlfile when i can still use the backup controlfile ? as in any case, i would still need to resetlog.
Rgds,
NoobIf you have backup controlfile then do not need recreate control files.And you need use backup control file.If you lost all backup of control files and copies then or you want change database name then you can use RECREATE CONTROL FILE again.

Error: This disk needs to be repaired using the Recovery HD. When I boot on Recovery and run verify disk, the error doesn't come anymore. Just when I run verify disk on normal mode. Anybody has seen this before?

My Macbook Pro (Retina, 13-inch, Early 2013) has been freezing out of the blue probably once every two months. I restarted on safe mode, went to Disk Utility, repaired permissions and ran "Verify Disk" and got the following:
Invalid directory item count(It should be 114483 instead of 114484)
File system check exit code is 8.
Error: This disk needs to be repaired using the Recovery HD. Restart your computer, holding down the Command key and the R key until you see the Apple logo. When the OS X Utilities window appears, choose Disk Utility.
Rebooted on Recovery mode and ran "Verify Disk" but the message didn't appear anymore, thus not letting me to access the "Recovery HD" procedure.
When I restart normally and do the disk verification I get the same error.
Has anybody come to something similar?
Suggestions?

I never ever run a Verify Disk. I simple repair the disk drive and then the user partition(s).
And do one or two Safe Boots.
Also helpful to have two full backups: TimeMachine at least, plus a clone of your system drive and data.
Install or clone the system to an external hard drive, repair that and then boot from it, check that everything works, repair the internal drive.
You need to use Repair to TRIM an SSD.
Lots of problems with Yosemite when updating install a new OS. Always better to backup, erase, install, and then use Setup Assistant to import and restore settings and files.
Probably better to post in the MacBook Pro forum or better yet, in Yosemite forum.

How do i use the recovery disks and backup and restore my laptop in a new HDD without losing OS lic?

I am running a HP-DV6 6090ee laptop with windows 7 Home Premium 64bit OS. This problem started from last evening.
I am getting a "Smart Hard disc error" error message before boot and ater booting windows saying that my HDD is having problems and i need to backup and check the hdd.
After checking i found that i have a corrupted hdd and i am going to replace with a new one.
I need to know the following :
> How do i restore my windows license and my antivirus license in the new hdd?
> i dont currently have a OEM HP OS cd. can i use any windows 7 cd??
> at what stage should i use the recovery disk i created from the recovery partition be used? Whats its specific use?
I really appreciate any quick response as my current HDD is running out of life.
Regards
A

See these 2 Links...
Syncing to a New Computer...
https://discussions.apple.com/docs/DOC-3141
Recovering your iTunes library from your iPod or iOS device
https://discussions.apple.com/docs/DOC-3991

Backups when using flashback recovery

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