The lifecycle of a backup set indicates the retention period of backup data that is stored in Database Backup (DBS). DBS dumps and clears backup sets based on the lifecycle rules that you specify. This topic describes lifecycle rules and how to manage the lifecycle rules of backup sets.

Lifecycle rules

  • The lifecycle of a backup set ranges from seven days to 3,650 days (10 years). DBS automatically deletes the expired backup sets that meet a specific condition of DBS.
    Note The condition is that the expired backup schedule has a minimum of three full backup sets. If this condition is not met, DBS does not delete the expired backup sets.
  • If you modify lifecycle rules after you create a backup schedule, the modified lifecycle rules apply to existing and newly generated backup sets.

Modify and apply lifecycle rules

For more information, see Modify the backup policy of a backup schedule or Manage backup schedules.


  • Q: I have a backup schedule whose lifecycle is set to seven days. Why are backup sets retained after the backup schedule expired?

    A: If the backup schedule has less than three full backup sets, DBS does not delete the expired backup sets.