【正文】 ile 9 Channel MML Data file 6 Data file 7 Data file 8 Backup Piece 3 Channel MML 45 Copyright 169。 RMAN CONFIGURE DEVICE TYPE 2 DISK PARALLELISM 2 3 BACKUP TYPE TO 4 COMPRESSED BACKUPSET。 2023, Oracle. All rights reserved. Image Copy Copy of data file 3 Copy of archived log Data file 3 Archived log file Data file 3 Archived log file RMAN BACKUP AS COPY 2 DATAFILE 39。 3 FORMAT 39。 RMAN BACKUP AS COPY 4 ARCHIVELOG LIKE 39。 5 FORMAT 39。 48 Copyright 169。 2023, Oracle. All rights reserved. BACKUP Command Options ? Check for physical block corruptions. ? Scan for logical corruptions and physical corruptions. ? Set a threshold on the number of detected corruptions allowed before aborting. ? Validate the target input files before performing a backup operation. ? Duplex the backup set. ? Overwrite an existing backup set or image copy. ? Pass control of the data transfer between storage devices and the data files on disk to the media management layer. ? Encrypt the backup files. 51 Copyright 169。/disk1/backup/ar_%t_%s_%p39。 53 Copyright 169。 Archived log file copies SPFILE Control file Data file copies 54 Copyright 169。 2023, Oracle. All rights reserved. Differential Versus Cumulative ? A differential incremental backup contains all blocks changed since the last incremental backup. ? A cumulative incremental backup contains all blocks changed since the last level 0 incremental backup. Lvl Day Sun Mon Tue Wed Thu Fri Sat Sun Level 0 Level 0 1 1 1c 1 1 0 0 1c 57 Copyright 169。 2023, Oracle. All rights reserved. Enabling Block Change Tracking SQL ALTER DATABASE ENABLE 2 BLOCK CHANGE TRACKING 3 USING FILE 39。 4 REUSE。 2023, Oracle. All rights reserved. Incrementally Updating Backups Incremental backup files Recovered data file Image copy of data file Image copy of data file updated to a more recent state RMAN RECOVER COPY OF 2 DATAFILE {n|39。} 3 WITH TAG 39。 Commands BACKUP Block . Inc. Update LIST REPORT DELETE 60 Copyright 169。 RMAN LIST BACKUP OF DATABASE。 RMAN LIST COPY OF DATABASE ARCHIVELOG 2 FROM TIME=39。 Commands BACKUP Block . Inc. Update LIST REPORT DELETE 61 Copyright 169。 2023, Oracle. All rights reserved. REPORT NEED BACKUP Command ? Lists all data files that require a backup ? Assumes that the most recent backup is used during a restore ? Provides four options: – Incremental – Days – Redundancy – Recovery window ? Uses the current retention policy configuration if no options are specified 63 Copyright 169。 RMAN REPORT NEED BACKUP incremental 3。 RMAN REPORT NEED BACKUP 2 recovery window of 3 days。 2023, Oracle. All rights reserved. REPORT OBSOLETE and DELETE OBSOLETE ? Find all recovery files that are deemed obsolete according to the current retention policy settings: ? List the obsolete recovery files, if no more than two backup copies are needed: ? Delete the backup set with a backup set key of 4: ? Delete the recovery files considered obsolete, because they have more than two backups: RMAN REPORT OBSOLETE REDUNDANCY 2。 RMAN DELETE BACKUPSET 4。 Commands BACKUP Block . Inc. Update LIST REPORT DELETE 65 Copyright 169。 2023, Oracle. All rights reserved. RMAN Dynamic Views ? V$ARCHIVED_LOG ? V$BACKUP_CORRUPTION ? V$BACKUP_DEVICE ? V$BACKUP_FILES ? V$BACKUP_PIECE ? V$BACKUP_REDOLOG ? V$BACKUP_SET ? V$BACKUP_SPFILE ? V$COPY_CORRUPTION ? V$RMAN_CONFIGURATION 68 Copyright 169。 2023, Oracle. All rights reserved. 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH