9 Copyright © Oracle Corporation, 2002. All rights reserved. Oracle Recovery Manager Overview and Configuration 9-2 Copyright © Oracle Corporation, 2002. All rights reserved. Objectives After completing this lesson, you should be able to do the following: • Identify the features and components of RMAN • Describe the RMAN repository and control file usage • Describe channel allocation • Describe the Media Management Library interface • Connect to RMAN without the recovery catalog • Configure the RMAN environment 9-3 Copyright © Oracle Corporation, 2002. All rights reserved. Recovery Manager Features RMAN provides a flexible way to: • Back up the database, tablespaces, datafiles, control files, and archive logs • Store frequently executed backup and recovery operations • Perform incremental block-level backup • Skip unused blocks • Specify limits for backups 9-4 Copyright © Oracle Corporation, 2002. All rights reserved. Recovery Manager Features RMAN provides a flexible way to: • Detect corrupted blocks during backup • Increase performance through: – Automatic parallelization – Generation of less redo – Restricting I/O for backups – Tape streaming • Manage backup and recovery tasks 9-5 Copyright © Oracle Corporation, 2002. All rights reserved. Recovery Manager (RMAN) Server session (default) Server session (polling) Server session (channel) MML Server session (channel) Server session (channel) Target database Server session (rcvcat) Recovery catalog DB Enterprise Manager Recovery Manager Components Disk Disk 9-7 Copyright © Oracle Corporation, 2002. All rights reserved. Using the Backup Management Wizards 9-8 Copyright © Oracle Corporation, 2002. All rights reserved. RMAN Repository: Using the Control File • RMAN repository is metadata about target database and backup and recovery operations. • RMAN repository is always stored in the control file of the target database. • CONTROL_FILE_RECORD_KEEP_TIME determines the minimum age in days of a record before it can be overwritten. • The control file can grow in size. 9-9 Copyright © Oracle Corporation, 2002. All rights reserved. Channel Allocation RMAN Channel (disk) Server Session Channel (sbt) Server Session Target database Disk 9-11 Copyright © Oracle Corporation, 2002. All rights reserved. Automatic Channel Allocation • Change the default device type: • Configure parallelism for automatic channels: • Configure automatic channel options: RMAN> CONFIGURE DEVICE TYPE DISK PARALLELISM 3; RMAN> CONFIGURE DEFAULT DEVICE TYPE TO sbt; RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK 2> FORMAT = ‘/BACKUP/RMAN/%U'; RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK 2> MAXPIECESIZE 2G; 9-12 Copyright © Oracle Corporation, 2002. All rights reserved. Channel Allocation Using OEM [...]... RMAN> REPORT NEED BACKUP 2> recovery window of 3 days; 9-34 Copyright © Oracle Corporation, 2002 All rights reserved Recovery Manager Packages Recovery Manager uses PL/SQL packages as its interface to: Target • Target databases database • The recovery catalog dbms_rcvcat dbms_rcvcat dbms_rcvman dbms_rcvman Recovery Manager PL/SQL dbms_backup_restore dbms_rcvman dbms_rcvman Recovery catalog 9-35 Target... Copyright © Oracle Corporation, 2002 All rights reserved RMAN Commands RMAN commands are of the following types: • Stand-alone – Executed only at the RMAN prompt – Executed individually – Cannot appear as subcommands within RUN • Job – Must be within the brackets of RUN – Executed as a group • 9-23 Stand-alone or job Copyright © Oracle Corporation, 2002 All rights reserved Job Command: Example RUN command:... reserved Additional RMAN Command Line Arguments • Writing RMAN output to a log file: $ rman target sys /oracle log $HOME/ORADATA/u03/rman.log append • Executing a command file when RMAN is invoked: $ rman target sys /oracle log $HOME/ORADATA/u03/rman.log append @’$HOME/STUDENT/LABS/my_rman_script.rcv’ 9-20 Copyright © Oracle Corporation, 2002 All rights reserved Recovery Manager Modes • Interactive mode... reserved Media Management Recovery Manager Oracle server session Media management library Media management server software Tape library or single tape 9-15 Copyright © Oracle Corporation, 2002 All rights reserved Types of Connections with RMAN • • • Target database Recovery catalog database Auxiliary database – Standby database – Duplicate database – TSPITR instance 9-17 Copyright © Oracle Corporation,... RMAN> SHOW ALL; 9-29 Copyright © Oracle Corporation, 2002 All rights reserved LIST Command Operations • • • 9-30 Lists backup sets and copies of datafiles Lists backup sets and copies of any datafile for a specified tablespace Lists backup sets and copies containing archive logs for a specified range Copyright © Oracle Corporation, 2002 All rights reserved The LIST Command • List backups of all files... reserved Connecting Without a Recovery Catalog Target database • Server process (polling) Server process (default) Recovery manager (RMAN) Starting RMAN locally UNIX: $ ORACLE_ SID=DB01; export ORACLE_ SID $ rman target / as sysdba Windows NT: C:\> set ORACLE_ SID=DB01 C:\> rman target / as sysdba • Starting RMAN remotely rman target sys/target_pwd@DB01 9-18 Copyright © Oracle Corporation, 2002 All rights... current’; } 9-25 Copyright © Oracle Corporation, 2002 All rights reserved RMAN Configuration Settings • • RMAN is preset with default configuration settings Use the CONFIGURE command to: – – – – – – 9-26 Configure automatic channels Specify the backup retention policy Specify the number of backup copies to be created Limit the size of backup sets Exempt a tablespace from backup Enable and disable backup optimization... default value: RMAN> CONFIGURE RETENTION POLICY CLEAR; RMAN> CONFIGURE CHANNEL DEVICE TYPE sbt CLEAR; 9-28 Copyright © Oracle Corporation, 2002 All rights reserved The SHOW Command • • Displays persistent configuration settings Use the SHOW command to display: – – – – – – • Automatic channel configuration settings Backup retention policy settings Number of backup copies to be created Backup set size limit... TABLESPACE "SYSTEM"; 9-31 Copyright © Oracle Corporation, 2002 All rights reserved The REPORT Command • • Produces a detailed analysis of the repository Produces reports to answer: – Which files need a backup? – Which backups can be deleted? – Which files are unrecoverable? 9-32 Copyright © Oracle Corporation, 2002 All rights reserved The REPORT NEED BACKUP Command • • • Lists all datafiles that require... tablespace from backup Enable and disable backup optimization Copyright © Oracle Corporation, 2002 All rights reserved The CONFIGURE Command • Configure automatic channels: RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/db01/BACKUP/%U'; • Implement retention policy by specifying a recovery window: RMAN> CONFIGURE RETENTION POLICY TO RECOVERY 2> WINDOW OF 7 days; • Implement retention policy by specifying . 9 Copyright © Oracle Corporation, 2002. All rights reserved. Oracle Recovery Manager Overview and Configuration 9-2 Copyright © Oracle Corporation,. backups – Tape streaming • Manage backup and recovery tasks 9-5 Copyright © Oracle Corporation, 2002. All rights reserved. Recovery Manager (RMAN) Server session (default) Server session (polling) Server session (channel) MML Server session (channel) Server session (channel) Target database Server session (rcvcat) Recovery catalog