Expert Oracle Exadata - Parent Directory

CHAPTER 9 RECOVERING EXADATAboot image included on all Exadata servers. When the system boots from the diagnostics ISO, you will beprompted step by step through the recovery process. Let’s take a look at the basic steps for recovering afailed database server from the LVM snapshot-based backup we took earlier in this chapter:1. Place the LVM snapshot backup image on an NFS shared file system that isaccessible to the failed server by IP address. The file we’ll be working with isnamed enkdb01_system_backup.tar.bz2.■ Note: This recovery procedure uses a backup image taken using LVM snapshots. Backups that are notsnapshot-based can also be used for systems that are not configured with LVM. Without LVM snapshots, thebackup image can be created by running the following command from the root directory:tar -pjcvf enkdb01_system_backup.tar.bz2 * /boot --exclude enkdb01_system_backup.tar.bz22. Attach the /opt/oracle.SupportTools/diagnostics.iso boot image to thefailed server through the ILOM. This can be done from any of the otherdatabase servers in the rack.3. Reboot the failed server and select the CD-ROM as the boot device. When thesystem boots from the diagnostics ISO, it will enter a special server recoveryprocess.4. From this point on, the recovery process will include step-by-step directions.For example, the following process recovers the database server from thebackup image, enkdb01_system_backup.tar.bz2. Answers to the prompts areshown in bold_italics.Choose from following by typing letter in '()':(e)nter interactive diagnostics shell. Must use credentials from Oracle support to login(reboot or power cycle to exit the shell),(r)estore system from NFS backup archive,Select: rAre you sure (y/n) [n]: yThe backup file could be created either from LVM or non-LVM based compute node. Versions below11.2.1.3.1 and 11.2.2.1.0 or higher do not support LVM based partitioning. Use LVM basedscheme(y/n): yEnter path to the backup file on the NFS server in format:://For example, 10.10.10.10:/export/operating_system.tar.bz2NFS line:nfs_ip: /export/enkdb01_system_backup.tar.bz2IP Address of this host: 192.168.10.62297