Backing Up Oracle - Computing at Cornell

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Figure 4. Log files Database Some RDBMSs support the use of log files to perform forward recovery. Forward recovery takes advantage of the fact that log files hold details of all changes that have been made to the database, and therefore you do not necessarily need to undo changes but instead can reapply changes. With forward recovery, the recovery process can: Restore a database to the state it was in at the time the last backup was taken Use the log files to reapply the changes that had been made since the last backup was taken Back out (undo) any partially completed changes. A standard RDBMS concept related to log files is the checkpoint process. All RDBMSs use buffers in memory to hold changes to the database and log files. The purpose of buffers is to improve the operational performance of the RDBMS. However, the use of buffers means that most changes to databases and log files do not get written to disk until some time after the RDBMS has indicated to the user application that the update has been made successfully. Checkpoints ensure that all database and log file changes held in the RDBMS' buffers are flushed out to disk. This shortens the time it takes to recover a database after a system crash because the number of redundant log records processed during the recovery is reduced. All RDBMSs support checkpoints and issue them automatically at intervals. It is recommended that log files be mirrored or duplexed. 14 Backing Up Oracle using Tivoli Storage Management records changes to DB Log Files
2.1.7 Control files Some RDBMS maintain control files to hold additional information about the physical structure of the database, such as which physical files are used by each tablespace and which one is the current log file. For those RDBMSs that use control files, you need to define policies for backing up those files. It is recommended that these files also be mirrored or duplexed. 2.1.8 Configuration parameters All RDBMSs provide a range of options. Some are set permanently, and others can be modified even when a database is in use (running). Some options allow you to tune the performance of the database; others allow you to specify how you want logging, for example, to be implemented. Depending on the RDBMS, you can either change the configuration parameters using database commands or modify them in an initialization file. The configuration parameters may be stored in a file, as in the case of an initialization file. For RDBMSs which use initialization files, a database may have multiple initialization files. One reason for having multiple files for a single database might be to optimize performance for different circumstances. For example, you may decide to allocate one set of values when the database is used for batch processing and another set when it is used for online transactions. Although some of the options are set differently for each situation, many will be the same. Some RDBMSs allow you to specify options that are common to multiple initialization files in configuration files. Instead of repeating all options and their values in each of the initialization files you can select the configuration file that contains the options that you want to use. You need to define policies for backing up both initialization files and configuration files. Chapter 2. Overview of relational databases and the Oracle product 15
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5.1.3 Edit the client options files
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5.1.4 Registering with the TSM serv
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6.1.1.1 RMAN command The RMAN comma
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Figure 13. RMAN and TSM system comp
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The following are sample print scre
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To list the result of the register
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6.3.2 Whole database backup A whole
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6.3.3.2 Cumulative incremental back
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Figure 17. Whole consistent backup,
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. The second archivelog backup exam
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The following example shows the cod
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88 Backing Up Oracle using Tivoli S
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The normal way to start SQL*Net ser
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7.2.1 Report utility The list comma
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RMAN> report need backup incrementa
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7.2.1.4 Report on unrecoverable dat
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7.2.2.3 List backup of certain obje
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To list backups of archive logs bet
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#!/bin/ksh # Initialize variables:
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This is an example of TSM SQL SELEC
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Control file Archive log If the con
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8.3.2 Complete recovery Next, we cr
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Some hours after the successful rec
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We created an RMAN command file inc
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We created an inito.ora file for in
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In this example: - The syntax for t
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With this storage policy defined, t
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Figure 21. Downloading TDP for Orac
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We wanted to change the installatio
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We left the program folder as the d
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The next screen was the registratio
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.. Figure 31. Editing the client op
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Figure 33. First steps to test a RM
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RMAN> run { 2> allocate channel t1
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RMAN> list backup; RMAN-03022: comp
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From the RMAN prompt, we need to al
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From this site, you can select whic
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The next screen will prompt you for
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Select either Complete or Custom. T
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After selecting a Complete or Custo
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If you are using TCP/IP as your com
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9.7.3.1 Coexistence of backup-archi
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10.1.1.1 RMAN command The RMAN comm
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Figure 47. RMAN and TSM system comp
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10.1.3 Registering the target datab
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10.2.2 Whole database backup A whol
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Cumulative backups require more sto
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shutdown immediate ; startup force
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The first statement alter system ar
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After selecting the Archive button,
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To use this command file with the s
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After running that command, a numbe
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Figure 55. Changing the scheduler s
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11.3.1 Report utility The report ut
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RMAN> report need backup redundancy
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11.3.2.2 List old backups You can l
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11.3.3 Crosscheck utility To list b
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col handle for a30 set echo off set
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Control file Archive log If the con
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. RMAN successfully restored the da
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C:\oracle\oradata\beach>dir Volume
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Action UNIX chapters Windows chapte
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B.1.1.1 Windows Make sure that the
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The value for errorlogname will eit
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B.4 List of logfiles A key thing to
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When you use the RMAN command to de
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B.5.3 Renaming / deleting the TSM f
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C.1.4 Synchronization utility (TDPO
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Table 4 contains an overview of the
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C.2.5 Validating the setup We used
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This option can be set in the TDP f
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copy mgmtclass API_DOMAIN API_POLIC
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C.3.3 TDPOSync The following is a T
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- The value of the compression opti
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Figure 59. FlashCopy concept There
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E.2 Overview of TDP for ESS TDP for
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The following is a description of o
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The stanza for the server swiss in
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shark_target_volume We only used on
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E.3.2.1 Backup on the production ma
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E.3.3.1 Backup We performed both ba
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In order for the DBA user (oracle8)
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F.1.1 Define new management class f
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F.1.3 Modify dsmsta.opt In the ...\
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Right-clicking AdsmScsi and selecti
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tsm: BRAZIL>define server jamaica_s
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F.2 Running a backup and verifying
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G.2.2 How to use the Web material T
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that the same or similar results wi
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I.4 Referenced Web sites These Web
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IBM Redbooks fax order form Please
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DSMI_CONFIG 36 ESS 227 Configuratio
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Backing Up Oracle using Tivoli Stor
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