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How to use the TIME column to check Oracle database backup mode

Is there a script that can be used as an alert that tells if the database has been in backup mode for a specified period of time? (Ex. 1 hr, 2 hr. etc.)

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The V$BACKUP view contains a column called TIME. This column denotes the date/time the file was placed in backup mode. To see the longest amount of time the Oracle database has been in BACKUP mode for any tablespaces, use the following query:

SELECT TO_CHAR(MAX(time),'MM/DD HH24:MI:SS') AS backup_time FROM v$backup;

This was first published in July 2009

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