A unit of data backup recovery

Similar Questions

• Simple question about data backup recovery

  Hi all

  It is the first time that I will propose Vmware Essentials Plus Kit as a solution to one of our customers.

  The solution will be X 2 DL180 server with 2 TB of storage each connected to an IBM iSCSI SAN DS3500 series.

  I want to be able to provide this scenario HA, and also, I want to use the data recovery backup to perform backups of virtual machines OF SAN DL180 server, so in the case of the SAN has very serious injury and can not be brought back online on the same day, in order to start the machines directly from the DL 180 servers.

  I would like to know if it is a supported scenario.

  Thank you

  Very welcoming. Unit vDR is certainly worth using because it allows long-term storage of backup and in a space images relatively small. Restoration of 10 mV because of a collapse of SAN he would not provide a simple and fast restoration.  The same 10 script ghettoVCB clones could be high in a few minutes.

• Using primary data backup recovery

  Hi all
  
  Here we have an environment dataguard with db1 (db_unique_name) as primary and db2 (db_unique_name) Physics of the standby database. We have configured dataguard in environments of 10 g and we don't use a grid control. And now we want to configure rman for incremental backups. After you set up, we took full backup successfully in the newspapers of the previous day and archive. While the test case we dropped a primary data file and tried to get it back. It displays the following error. Also when I tried "overlapping backup" since the primary, is to show that all backups taken to sleep are "expiration". But the same backups show as 'available' RMAN connected standby mode. Can someone help with this problem?
  
  Elementary school:
  
  [oracle@db1 NIOS] $ sqlplus / as sysdba;
  
  SQL * more: release 10.2.0.3.0 - Production on Sat Oct 6 02:58:11 2012
  
  Copyright (c) 1982, 2006, Oracle. All rights reserved.
  
  
  Connected to:
  Oracle Database 10 g Enterprise Edition release 10.2.0.3.0 - Production
  With partitioning, OLAP and Data Mining options
  
  SQL > alter database datafile offline 4; (after the deletion of system-level data file)
  
  Database altered.
  
  [oracle@db1 NIOS] $ rman target sys/oracle@db1 catalog rman/oracle@appsdb
  
  Recovery Manager: release 10.2.0.3.0 - Production on Sat Oct 6 02:58:58 2012
  
  Copyright (c) 1982, 2005, Oracle. All rights reserved.
  
  connected to target database: NIOS (DBID = 1590630518)
  connected to the recovery catalog database
  
  RMAN > restore datafile 4;
  
  From catering to 12-SEP-06
  allocated channel: ORA_DISK_1
  channel ORA_DISK_1: sid = 107 devtype = DISK
  
  channel ORA_DISK_1: from datafile backupset restoration
  channel ORA_DISK_1: specifying datafile (s) to restore from backup set
  restoring datafile 00004 in /u01/app/oracle/oradata/NIOS/users01.dbf
  channel ORA_DISK_1: backup /u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T174801_84gjqt0n_.bkp piece reading
  ORA-19870: error reading backup total /u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T174801_84gjqt0n_.bkp
  ORA-19505: impossible to identify the file ' / u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T174801_84gjqt0n_.bkp '.
  ORA-27037: unable to get file status
  Linux error: 2: no such file or directory
  Additional information: 3
  switch to the previous backup
  
  channel ORA_DISK_1: from datafile backupset restoration
  channel ORA_DISK_1: specifying datafile (s) to restore from backup set
  restoring datafile 00004 in /u01/app/oracle/oradata/NIOS/users01.dbf
  channel ORA_DISK_1: backup /u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T164212_84gdwdst_.bkp piece reading
  ORA-19870: error reading backup total /u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T164212_84gdwdst_.bkp
  ORA-19505: impossible to identify the file ' / u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T164212_84gdwdst_.bkp '.
  ORA-27037: unable to get file status
  Linux error: 2: no such file or directory
  Additional information: 3
  switch to the previous backup
  
  channel ORA_DISK_1: restore datafile 00004
  entry of data copy file recid = stamp 13 = filename=/tmp/users01.dbf 793208425
  destination for the restoration of the data file 00004: /u01/app/oracle/oradata/NIOS/users01.dbf
  RMAN-00571: ===========================================================
  RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.
  RMAN-00571: ===========================================================
  RMAN-03002: failure of the restore command at 06/09/2012 02:59:10
  ORA-19571: datafilecopy recid 13 stamp 793208425 not found in the control file
  ORA-19600: input file is datafile 13-copy)
  ORA-19601: output file is the data-copy 0 file (/ u01/app/oracle/oradata/NIOS/users01.dbf)
  
  RMAN > crosscheck backup;
  
  using channel ORA_DISK_1
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T164038_84gdsjlw_.bkp recid = piece stamp 18 = 793212040
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T164038_84gdtz6p_.bkp recid = piece stamp 19 = 793212087
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T164212_84gdwdst_.bkp recid = piece stamp 20 = 793212132
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/autobackup/2012_09_05/o1_mf_s_793242038_84gdxw5j_.bkp recid = piece stamp 21 = 793212180
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T174759_84gjqrtn_.bkp recid = 22 = 793216080 stamp item
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T174801_84gjqt0n_.bkp recid = 23 = 793216082 stamp item
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/autobackup/2012_09_05/o1_mf_s_793246288_84gjs9h4_.bkp recid = piece stamp 24 = 793216129
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/product/10.2.0/db_1/dbs/c-1590630518-20120906-00 recid = piece stamp 5 = 793238431
  Cut 8 objects
  
  Stand-by:
  
  [oracle@db2 NIOS] $ rman target sys/oracle@db2 catalog rman/oracle@appsdb
  
  Recovery Manager: release 10.2.0.3.0 - Production Wed Sep 5 20:11:58 2012
  
  Copyright (c) 1982, 2005, Oracle. All rights reserved.
  
  connected to target database: NIOS (DBID = 1590630518, is not open)
  connected to the recovery catalog database
  
  RMAN > crosscheck backup;
  
  allocated channel: ORA_DISK_1
  channel ORA_DISK_1: sid = 91 devtype = DISK
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T164038_84gdsjlw_.bkp recid = piece stamp 18 = 793212040
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T164038_84gdtz6p_.bkp recid = piece stamp 19 = 793212087
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T164212_84gdwdst_.bkp recid = piece stamp 20 = 793212132
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/autobackup/2012_09_05/o1_mf_s_793242038_84gdxw5j_.bkp recid = piece stamp 21 = 793212180
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_annnn_TAG20120905T174759_84gjqrtn_.bkp recid = 22 = 793216080 stamp item
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/backupset/2012_09_05/o1_mf_nnndf_TAG20120905T174801_84gjqt0n_.bkp recid = 23 = 793216082 stamp item
  "" element of verified backup: turned out to be "AVAILABLE"
  backup handle=/u01/app/oracle/flash_recovery_area/DB2/autobackup/2012_09_05/o1_mf_s_793246288_84gjs9h4_.bkp recid = piece stamp 24 = 793216129
  verified backup item: found to be "EXPIRED".
  backup handle=/u01/app/oracle/product/10.2.0/db_1/dbs/c-1590630518-20120906-00 recid = piece stamp 5 = 793238431
  Cut 8 objects
  
  Thanks in advance.

  Hello;

  I would consider one of them step by step:

  Use of primary database to retrieve backup RMAN backup files

  http://oraganism.files.WordPress.com/2009/04/backup-from-physical-standby.PDF

  How to use the backup of the previous day to restore primary db

  http://alexzeng.WordPress.com/2008/09/13/how-to-use-standby-backup-to-restore-primary-DB/

  Steps to recover the database to the primary database using a copy of the file to the standby database.

  http://dbaregistry.blogspot.com/2010/01/steps-to-recover-primary-databases.html

  RMAN in a data protection environment

  http://Oracle.Su/docs/11g/backup.112/e10642/rcmarchi.htm#CHDIFGFH

  Make a clone of database using a physical standby database Data Guard

  http://gavinsoorma.com/2012/04/performing-a-database-clone-using-a-Data-Guard-physical-standby-database/

  Best regards

  mseberg

• Essbase data backup and recovery

  Hello
  
  We have a process in place for the App backup folder... I saw a process where data recovery is made by just the files ind and pag... and the restructuring of the DB... it is a good practice for the data backup and recovery...

  Assuming that the pag and index files are in the same location that the db files then, stop the application, restore the files, start up, up to you if you want to restructure as if you have restored all the files, it will be in the same State when the backup was performed.

  See you soon

  John
  http://John-Goodwin.blogspot.com/

• "backup recovery area" ignore all save them

  Hello everyone.

  I use 11.2.0.4 on OL 6.5 EE.

  I use suggested the Oracle backup strategy above I use "backup recovery area" at the end of the script and I spotted that he doesn't know to save them all. Please notify.

  Hello everyone and thanks for your help.

  I studied the issue and has managed to solve.

  First I mw show you the parameters persistent rman:

  Database with db_unique_name MYDB RMAN configuration parameters are:

  CONFIGURE RETENTION POLICY TO RECOVERY OF 7-DAY WINDOW;

  CONFIGURE BACKUP OPTIMIZATION

  SET UP DEFAULT DISK DEVICE TYPE;

  CONFIGURE CONTROLFILE AUTOBACKUP ON;

  CONFIGURE CONTROLFILE AUTOBACKUP FORMAT for DEVICE TYPE DISK to "+ fra/mydb/controlfile/%F";

  SET UP THE DEVICE TYPE DISK PARALLELISM 1 BACKUP BACKUPSET TYPE;

  CONFIGURE BACKUP OF DATA TO DISK FILE TYPE DEVICE TO 1;

  CONFIGURE BACKUP ARCHIVELOG FOR DEVICE TYPE DISK TO 1;

  CONFIGURE MAXSETSIZE TO UNLIMITED;

  CONFIGURE THE DATABASE ENCRYPTION

  CONFIGURE THE ENCRYPTION ALGORITHM "AES128";

  CONFIGURE COMPRESSION ALGORITHM 'BASIC' AND 'DEFAULT' LIBERATION OPTIMIZE FOR TRUE LOAD;

  CONFIGURE THE NONE ARCHIVELOG DELETION POLICY;

  CONFIGURE SNAPSHOT CONTROLFILE NAME TO ' / oracle/product/11.2.0/dbhome_1/dbs/snapcf_mydb.f';

  Now I use another script to take my backup and it works fine

  RMAN > run {}

  2 > crosscheck backup;

  3 > overlapping copy;

  4 > overlap archivelog all;

  5 > DELETE noprompt EXPIRED ARCHIVELOG ALL;

  6 > delete noprompt ARCHIVELOG until TIME ' SYSDATE-8';

  7 > DELETE noprompt EXPIRED BACKUP;

  8 > delete noprompt obsolete;

  9 > GET COPY OF DATABASE WITH TAG 'PAYMENT' until ' SYSDATE-8';

  10 > LEVEL 1 INCREMENTAL BACKUP TO RECOVER WITH THE TAG 'MYDB' COPY DATABASE;

  {11 >}

  12 > run {}

  13 > GAME CONTROLFILE AUTOBACKUP FORMAT for DEVICE TYPE DISK TO ' / storage/flash_recovery_area/MYDB/controlfile/%F';

  14 > save destination recovery area "/ storage/flash_recovery_area";

  15 > BACKUP VALIDATE CHECK DATABASE LOGIC ARCHIVELOG ALL;

  {16 >}

• Using more of a VMWare backup recovery

  Hi all

  I'm sitting here und think next idea:

  We have 10 servers that must be saved. We use a VDR (VM Backup Recovery) for this. Thus, sometimes the catalog crashes and it takes neerly a day to fix it. While this time I can´t of backup or restore anything.

  These backups are on the same SAN as my ESX machines. So I have the big problem, if everything crashes (raid or more than 1 HDD) I have no chance to recover anything.

  Yes, I know that this is not 100% optimal. either way... we have no money to buy a second SAN!

  the idea was to develop an other VDR and connect it to a Terastation. Speed is absolutely secondary. This VDR would save computers same like the first VDR. (not at the same time, for example SQL Server is saved on VDR1 on VDR2 and 06:00 on 09:00)

  The biggest would be:

  -If VDR 1 catalog crashes, VDR2 works and I can fix the VDR1 without missing the backups or recoveryoptions

  -If my STI SAN crashing, I can use my Terastation to fix everything (the speed is secondary)

  What do you think of this idea?

  Good bye

  Andy

  You can define 2 different backup locations in a single device. So you can save on Monday for the first location and Tuesday for the second and so on. When an integrity check runs more than 24 hours, you have the second location-data store to restore on the same device operations. If you have enough backup-time, you can also save each VM twice in one day in two places at different times. In the event of a disaster you will be lucky and maybe lose only a location of data store and have all your backups without waitiing for the completion of the audit of integrity or something as a recataloguer. Up to now this works very well in my environment with 5 appliances and 180 VM. I use no more than 30 virtual machines for a single device, because integrity, check runs throughout.

• Install the new hard drive, I have no os or backup recovery disks

  I have a HP G62-340US notebook pc-product # XH066UA #ABA, OS is windows 7 64 bit.   The hard drive does not work so I'm relpacing with a new.  I have no os disks and any backup recovery.  When I turn on the laptop there that peripheral black splash screen States 3FO hard drive not found.

  My question is that I don't know what drives I need to order at HP to reformat my laptop.  Again, I have no backup disk or any disks. I lost everything on the laptop. which is ok.  So it's like I'm starting with a blank slate.

  Should I order the kit Media Ststem recovery for consumer notebook, which is a set of 4 discs?   and that's all that I need to install to return to the State wherever it was when I bought it new.  Are there other discs that I need to order or just that?

  Thank you very much for your help.

  Hello

  You just order a SET of recovery disks and this disc set will bring your machine to update 1 than why we call back to factory settings. Please check how to order from the following link:

  http://support.HP.com/us-en/document/bph07143

  Kind regards.

• Creation of backup recovery disks

  Hello Forum,

  When you use the backup recovery disc creation program, is a copy of all the recovery disc (d created or are the files from the (c drive also copied?)) With this drive, I'll then be able to restart my laptop with a new hard drive.

  Thank you very much

  FM.

  Hello

  While the recovery discs are just a bootable copy of the recovery partition D, operating after replacing the HARD drive, it will reinstall all the original scores (Windows C, HP_TOOLS, recovery D etc.) on the new drive - the machine will be in the State it was at the time of purchase.

  Kind regards

  DP - K

• Restore the iTunes app data backup and backup to iCloud

  My iPhone 6 has been stolen. I got iCloud backup enabled, and the last backup was 2 days.

  I do a full backup encrypted via iTunes it also sometimes manually, the last time was 1 month ago.

  I bought a 6 new iPhone as a replacement. When I tried to restore from your backup, everything (photos, applications, settings) seems to be restored very well, but most of my applications (not all) were missing from their app data.

  More importantly, Google Authenticator, which had all my keys to two factors and in hindsight, an app that follows the historic activity and has experienced a year of daily data stored on the device value authentication.

  I don't understand why it affected only a few applications, but not all. Most applications requiring a login account is no longer connected, makes me think that their data was not were properly restored either. I found one or two applications that had some settings restored properly, but most of my apps seem to be returned to a State of the new facility.

  I tried to re-do the restoration of iCloud again and got the same results.

  I'll try the iTunes backup restore then, but even if it works I would miss even 1 month of a data value. Is it possible to recover this data? I guess that that's actually in the iCloud backup 2 - old days, but for some reason any, that he is unable to restore.

  Is it possible to combine the full restoration of iTunes and then update with the most recent data backup to iCloud app?

  Update: when I tried to restore the iTunes backup I received this error a few minutes:

  

  Is it because the original phone was an iPhone 6 and the new phone is a 6s? Is it possible to access my backup?

• Create a backup recovery

  Is this possible on a drive hard laptop usb or should it be a flash drive?

  I thought to partition my drive hard portable 1 TB and dedicate it to the backup recovery.

  Thank you

  No, you need to save in a flash disk to bootable USB, you can back up an external HARD drive and retrieve the image with programs like daughters reflect.

• Using a USB flash drive for backup more driver and application backup recovery

  I have a 32 GB flash drive I used to create a recovery for my Aspire S7 backup using Windows 8.1. I understand that in creating this backup everything on the flash drive is deleted before creating backup. Can I now use this drive for other purposes, e.g., pilots and backup applications, pictures, documents, etc., or this flash drive now should he remain dedicated to the sole purpose of being a backup recovery?

  Hi zimmerbob

  I keep as a backup to dedicated recovery flash drive and use one for drivers & applications.

  It is always wise to keep the recovery discs, as well as the recovery disks. Flash memory is quite inexpensive for the moment!

• Deactivation of Dell Backup & Recovery Notifications

  We have a number of new PC (Win 7 Pro 64 bit) who all Dell Backup & Recovery installed. Now, I take that uninstall completely is not a good idea because of the way it is strongly linked to do system recovery / restore? So, how the to I turn of the annoying notifications! I don't want to hear/see anything about this piece of software! Especially since most of the notifications are 'NAGs' about 'try our cloud services' (I don't want them), or "upgrade to the pro version" (NOT a chance). They are opinions only in so much as they try to me I don't want to sell.

  Hi, due to problems in communicating with you, here I called Technical Support this morning (Dell case Ref: 895569609). They were able to confirm that, after you create a recovery on the USB media, had no reason why I couldn't just go ahead and uninstall Dell Backup & Recovery. They also confirmed that when you access Backup & Recovery via the Windows Start menu troubleshooting (accessed via F8 as Windows starts), it is run from the hidden restore partition and not affected by the uninstall of the Windows software itself. That's what I've went ahead and did to get rid of notifications. What about George

• How to make the backup recovery onboard cd - dvd burner drive

  How to make a backup recovery drive cd - dvd drive integrated with windows 7 Professional?

  How to make a backup recovery drive cd - dvd drive integrated with windows 7 Professional?

  You can do a repair disk or an image of the system - the two are below.

  Create the system repair disc

  1. Open backup and restore by clicking the Start button, clicking Control Panel, clicking system and Maintenance, and then clicking the backup and restore.
  2. In the left pane, click on create a system repair disc and follow the steps. If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

  What are the system recovery options in Windows 7?

  http://Windows.Microsoft.com/en-us/Windows7/what-are-the-system-recovery-options-in-Windows-7

  Create a System Image in Windows 7

  After you install and activate Windows 7 create a system image as a backup of your current computer in case you need to reinstall it. This will restore your computer to its exact state when the image has been made - which will save you the trouble of having to reinstall Windows 7 and installed everything currently again, and it takes much less time to do.

  1. click on the Start Menu and type "Save", and then click Backup of your files.

  2. in the Control Panel window that appears, click the blue link to the image.

  3 create a system image window should pop up.  Select which hard disk, DVD, or network location, you'll save your image.  Click next to continue.

  4. on the next page, check disks in your system and your system for.  Once you have selected the drives, click next to continue. Note: You can select as many records as you want (if available), but you choose to include means to the greater will be the size of the image.

  5. the next window is just a review, make sure everything is correct, and then click Start backup to start the process.  It may take 10 minutes or more, so patience is needed.

  6. once the backup is complete, you will be asked with the option to create a system repair disc.  It's a good idea, just in case your system has problems in the future.  Click Yes.

  7 choose which drive to record the disc you use to burn the disc.  Insert a CD or a blank DVD for the physical disk, and then click on create disc.

  How to restore Windows 7 from a System Image

  http://www.howtogeek.com/HOWTO/7702/restoring-Windows-7-from-an-image-backup

• Backup & recovery disks

  I bought a Dell Inspiron 660 s with Windows 8 on it, I really hated Windows 8, so I also bought Windows 7 and has that back on my computer. Before I did this, I did a disk backup & recovery CD. Can I use these discs to put Windows 8 on my computer, now instead of Windows 7? I decided to try another of Windows 8.

  Friday, October 17, 2014 00:06:14 + 0000, verna2197 wrote:

  I bought a Dell Inspiron 660 s with Windows 8 on it, I really hated Windows 8, so I also bought Windows 7 and has that back on my computer. Before I did this, I did a disk backup & recovery CD. Can I use these discs to put Windows 8 on my computer, now instead of Windows 7? I decided to try another of Windows 8.

  Yes.

  I would like to point out something that you may not realize: Windows 8
  has two interfaces; the modern/Metro Interface (which may be all the)
  you have looked at) and the traditional desktop Interface. You can use
  one or both. This traditional desktop Interface is almost
  identical to the interface of Windows 7. the biggest difference is that
  There is no Orb start clicking to bring up the start menu.
  But note that you can get the ORB start by using one of the many
  third-party programs, are free or very cheap (the classic interface
  http://classicshell.sourceforge.NET/ and debut8 to
  http://www.stardock.com/products/start8/; my personal preference is
  Debut8, but they are both very good).  And goes from an interface to
  the other is very easy; There are several ways, but simply by pressing
  the Windows key is perhaps the easiest.
  I use Windows 8, almost exclusively with traditional workstations
  the interface and with 8 Start installed. If you were to look at and use
  my computer, you would have a hard time realizing that it is not
  Windows 7.
  I also recommend to read "how to make Windows 8 or 8.1 watch and.
  Want Windows 7 "to http://www.howtogeek.com/elk/298/45121/4206

• Backup & Recovery in virtual environment

  Hello

  I need help to establish a good Backup & Recovery Strategy for VM-Ware with Oracle databases.

  Currently we use veeam backup the entire Virtual Machine during the night maintannce-window. On the virtual machine, we use RMAN to back up the databases, archivelogs fall under the machine.

  My problem:

  -If the virtual machine failure during the day, for example 16:00, cause of lost storage / instant failure that blocks the machine - I lose changes all day.

  So, where is the best place to save the logs to check-in during the day and how do I recover after an accident mentioned above? First step would be to recover the virtual machine with veeam, but subsequently? The database do not know what archivelogs were written, cause it contained last night?

  Thanks for your help.

  PS, we got the problem of the snapshot-crash on another machine, so it's really a thing that can happen.

  User106somethingorother,

  If you want to be able to recover in the case of the virtual machine / virtual disks are gone, you must ensure that your backups and archiving logs copied somewhere else.

  The users guide backup and restore (available at http://docs.oracle.com) would be the place to go to find out how to recover the database in many different scenarios, including one where you have lost direct control files and RMAN would therefore know about archiving logs is available.

  Kind regards

  John