Oracle9i Database Reference
Release 1 (9.0.1)

Part Number A90190-02
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Dynamic Performance (V$) Views, 17 of 211


V$BACKUP_SET

This view displays backup set information from the control file. A backup set record is inserted after the backup set is successfully completed.

Column  Datatype  Description 

RECID 

NUMBER 

Backup set record ID 

STAMP 

NUMBER 

Backup set record timestamp 

SET_STAMP 

NUMBER 

Backup set stamp. The backup set stamp and count uniquely identify the backup set.

Primary key for the V$BACKUP_SET table, and the foreign key for the following tables: V$BACKUP_PIECE, V$BACKUP_DATAFILE, V$BACKUP_REDOLOG, V$BACKUP_CORRUPTION 

SET_COUNT 

NUMBER 

Backup set count. The backup set count is incremented by one every time a new backup set is started (if the backup set is never completed the number is "lost"). If the control file is recreated then the count is reset to 1. Therefore the count must be used with the stamp to uniquely identify a backup set.

Primary key for the V$BACKUP_SET table, and the foreign key for the following tables: V$BACKUP_PIECE, V$BACKUP_DATAFILE, V$BACKUP_REDOLOG, V$BACKUP_CORRUPTION 

BACKUP_TYPE 

VARCHAR2(1) 

Type of files that are in this backup. If the backup contains archived redo logs, the value is L. If this is a datafile full backup, the value is D. If this is an incremental backup, the value is I

CONTROLFILE_INCLUDED 

VARCHAR2(3) 

Set to YES if there is a control file included in this backup set, otherwise set to NO 

INCREMENTAL_LEVEL 

NUMBER 

Location where this backup set fits into the database's backup strategy. Set to zero for full datafile backups, nonzero for incremental datafile backups, and NULL for archivelog backups. 

PIECES 

NUMBER 

Number of distinct backup pieces in the backup set 

START_TIME 

DATE 

The starting time 

COMPLETION_TIME 

DATE 

The time that this backup set completed 

ELAPSED_SECONDS 

NUMBER 

The number of elapsed seconds 

BLOCK_SIZE 

NUMBER 

Block size of the backup set 

INPUT_FILE_SCAN_ONLY 

VARCHAR2(3) 

YES indicates no actual backup is performed, but the datafiles are read. NO indicates a normal backup is performed. 

KEEP 

VARCHAR2(3) 

(YES/NO) Indicates whether or not this backup set has a retention policy that is different than the value for the configure retention policy 

KEEP_UNTIL 

DATE 

If KEEP_UNTIL_TIME is specified, this is the date after which the backup becomes obsolete. If this column is null, then the backup never expires. 

KEEP_OPTIONS 

VARCHAR2(10) 

Lists additional retention options for this backup set. Possible values are:

LOGS - The logs need to recover this backup are kept

NOLOGS - The logs needed to recover this backup will not be kept 


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