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Vấn đề backup SQL

Bài cuối 06-08-2022 08:23 PM của Zqjyve. 6 trả lời.
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Sắp xếp bài viết: Trước Tiếp theo
  • 01-13-2020 01:54 PM

    Vấn đề backup SQL

    Xin chào, tôi lên kế hoạch lập lịch tự động sao lưu  như thế này:

    -         chủ nhật full backup (cho tham số with init  ghi đè)

    -         thứ 3,5: different backup (cho with init  ghi đè).

    -         mỗi ngày đều backup transaction log (15 phút/ lần, không ghi đè)

    khi có sự cố vao ngày thứ 6, cần restore database, trước tiên backup tail transaction log, rồi restore bản full, sau tới bản different của ngày thứ 5, và lần lượt restore tất cả các transaction log sau ngày thứ 5, cuối cùng là bản tail.

     cho hỏi với tần suất backup transaction log như vậy (15phut/lan), thì 1 ngày có thể có tới hơn 90 bản backup transaction log).

    ko lẽ mình phải restore 90 bản này?

    và nếu không cho ghi đè transaction log thì dữ liệu sẽ rất lớn, không đủ dung lượng đĩa để chứa. (phải canh vào xóa bớt)

    còn nếu khi backup transacsion log mà  ghi đè  thì khi restore có khôi phục được hết dữ liệu ko? Vì theo tôi biết nếu ghi đè sẽ bị mất các transaction cũ.

    xin cho lời giải thích và hướng dẫn kế hoạch tự động backup tối ưu.

    xin cảm ơn.

    • Điểm chủ đề: 110
  • 06-08-2022 01:05 AM trả lời

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  • 06-08-2022 05:49 PM trả lời

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  • 06-08-2022 06:50 PM trả lời

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  • 06-08-2022 08:23 PM trả lời

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