3Com NSR-ORA V3.2 manual Online Backup of the Database, Configuration and management

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The individual Components

The Backup Component

3.2.2Online Backup of the Database

An online backup of the database is performed whenever the database is open at the time of the backup. In contrast to offline backups, the following phases are carried out:

1.All database files allocated to a tablespace are determined.

2.Backup is commenced with the ORACLE-specific command alter tablespace <tablespacename> begin backup.

3.All database files of this tablespace are backed up, irrespective of whether they are system files or raw devices.

4.Completion of the backup is indicated to the database system with the command alter tablespace <tablespacename> end backup.

3.2.3Configuration and management

The configuration file dbo${ORACLE_SID}.init, which must be located in the directory ${DBO_CONFIG_DIRECTORY}/config, can be used to determine cer- tain characteristics of the backup component. The following representation shows the parameters which are relevant to the backup component and located in the dbo${ORACLE_SID}.init configuration file (a model file named dbo.init is stored in the directory $NSR_INST/oracle/config). This configuration file is cre- ated automatically using the program configure_nsrora (see also the chapter “Installation and Configuration”).

The backup_TS_on_different_clients configuration file allows to split a backup among different NetWorker servers; when using ORACLE Parallel Server (OPS) also among different NetWorker clients.

To enable this feature, the file backup_TS_on_different_clients must be created in the /nsr/oracle/$ORACLE_SID/config direcory. If the file does not exist, NSR-ORA behaves as usual. You can find an example of such a configuration file in the /opt/nsr/oracle/config directory (for HP-UX: /opt/networker/oracle/config). The entries also are described there in detail.

! If you split a backup, Recover until Time is not possible any more.

System Administrator’s Guide

U42252-J-Z915-1-76

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Contents NSR-ORA Edition OctoberCopyright and Trademarks Audience ConventionsBoldface What is New in Release Update from Previous ReleasesPreface Introduction Physical Database Structure Logical Database StructureIntroduction Database Backup Archive Mode of the DatabaseDatabase files Control file System Administrator’s Guide U42252-J-Z915-1-76 ArchivingFunction Scope Function ScopeIndividual Components Archiving MonitorDatabase interface NSR-ORA Archiving Individual ComponentsArchive Tape libraryStarting and Ending the Archiving Monitor ExampleSubsequent status enquiry generates the following output # startamon.sh status ora ORACLESIDs oraLogging Following is a representative sample from the log fileBackup Component Individual ComponentsThe Backup ComponentOffline Backup of the Database Database interface NSR-ORA Backup Archiving ComponentIndividual Components Online Backup of the Database Configuration and managementChecking backups troubleshooting Log files from local backups not for NAS filersAmon Recordings Individual Components Installation and Configuration Quick StartInstallation then continues interactively InstallationInstallation and Configuration Licensing NSR-ORAKeylic command Installing NSR-ORA from CDIs to be installed Unix Client is requiredInvoke the following command Log in as root Set the Display variableRufen Sie folgendes Kommando auf Use the following command to uninstall NSR-ORA under Linux HP-UXInstallation is then with the command ConfigurationHow to Proceed for an Update from an Earlier Version Unpack the NSR-ORA.tarfile from the CDFirst make sure of the following Example Configuration tool is invoked with the commandPreparations Establishing tablespace namesInstallation and Configuration Checking the Oracle Administration ProgramConfiguring NSR-ORA Parameters for configurensrora Oracle ParametersOracle owner group Directory where Oracle is installedOracle owner NetWorker ParametersNo compression is used Amon ParametersNow the amon parameters are queried Mirror Recovery Parameters Parameters with Expert ModeOPS Parameters Amonmirrorgroup Defining backup sets save sets It is also recommended generally to carry out a full backup Configuring NetWorker # configurenetworker createdelete OraclesidRoot 68 # configurenetworker create ORA2 Installation ConfigurationNSR-ORA in OPS clusters On HP-UX /opt/networker/oracle/bin/startamon.sh Troubleshooting Backing Up an Oracle Database Version 8.0 or higherNSR-ORA on Linux Selecting the Type of Recovery Recovery ComponentRecovery Until Time with Logical Errors RecoveryControl file Database files Automatic Recovery Crash Recovery Performing a recovery Manual recoveryAutomatic Recovery for an Optional Point in Time Start orarecutFully-automatic Recovery New recovery attempt with orarecut can be madeRecovery Offline recovery of an offline or full backup For the recovery of an online backup only RecoveryPerforming a recoveryRecover the remaining save sets again Open the database usingRecovery with Oracle Parallel Server OPS Oracle No space left on deviceRecovery Using NSR-ORA with NetApp Filers Running NSR-ORA with NAS devicesPrerequisites NSR-ORA and NetAppConfiguring NSR-ORA with NetApp Filers RecommendationsNSR-ORA and NetApp NETAPPSNAPNR=255 Nfssave RSH Scenario 2 Two Backups per Day Scenario 1 Three Backups per DayName Oraclesidndmp Two groups for pure snapshot backups Name Oraclesidndmp One group for pure snapshot backupsName Oraclesidsnapinterval Scenario 3 Seven Backups per DayDefining the Ndmp Client You should use /vol/vol0 as the save setNetWorker Resources GroupsInterval attribute For Ndmp backups NSR-ORA provides two new save sets ClientsNdmpoffline client has to be assigned to Ndmp attributePools Backup with NSR-ORABackup methods Amon ClientSavegrp completion notification For online backups the binary control fileInformation and log files of the current backup process Control file as an Ascii trace fileRecovery with NSR-ORA Recover until time orarecutDebugging NSR-ORA and NetApp Crash Recovery nsrorarec Example 1 Recovery based on the last snapshotExample 2 Recovery based on a specified snapshot Database BackupShell parameter DefiningIndex Shell parameter Config.sh OutputFor NetApp Configurensrora For NetApp NetWorkerBackup component Components Shell parameter No space left on device error MessageShell parameter Nsrndmpsave command Installation Installing from CDRestore Redolog files OPS Configuration Installation on Remarkable thingsShell parameter Orarecut command For NetApp Nfssave System Administrator’s Guide U42252-J-Z915-1-76Update OPS

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