TAILIEUCHUNG - ORACLE8i- P15

ORACLE8i- P15: We want information information.” Possibly you recognize these words as the primary interest of a somewhat clandestine group, and as told by a character called Number 2 to Patrick McGoohan’s character Number 6 (in the old TV show The Prisoner). Indeed, in this day, information is king, and the speedy, accurate, and reliable retrieval of this information is paramount. | 556 I CHAPTER 13 ORACLE8i RECOVERY MANAGER TABLE THE BACKUPSPEC LIST SPECIFICATION CLAUSES Clause and Parameters Description CHANNEL channel_id Specifies the name of a specific channel to use when creating the backup sets. SETSIZE n TAG tag_name DELETE INPUT Defines the maximum size for a backup set in units of 1KB. Associates a given tag with the backup set being created. Causes all source input files to be removed after being backed up. This clause is normally used with archived redo log backups to remove the source files after a successful backup operation. SKIP Causes the RMAN backup to skip any datafiles that are OFFLINE READONLY or INACCESSIBLE. POOL n Defines the media pool in which the backup should be stored. Your media management software may or may not support this parameter. INCLUDE CURRENT CONTROLFILE Includes a snapshot of the current control file in the backup set being created by the backup. Recovery Commands There are two principal commands that are used in the recovery of a database from an RMAN database backup RESTORE and RECOVER. Just as with backups these commands are used in within the confines of a RUN block along with ALLOCATE CHANNEL and other commands that help facilitate special types of recoveries such as point-in-time recovery which we will discuss later in this chapter . A typical recovery script without any frills looks something like the one shown in Listing . Listing RMAN Database Recovery Script RUN ALLOCATE CHANNEL dl TYPE DISK RESTORE DATABASE RECOVER DATABASE RELEASE CHANNEL dl EXIT Please purchase PDF Split-Mlewoft to removebihis watermark. RUNNING RMAN 557 The RESTORE Command The purpose of the RESTORE command is to restore database datafiles archived redo logs or control files from RMAN backups in preparation for recovering from some sort of database failure. RMAN can recover the entire set of database datafiles datafiles associated with a given set of tablespaces or individual datafiles as .

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