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SQL Server 2019 on Linux數(shù)據(jù)庫修復  硬盤故障導致數(shù)據(jù)庫恢復失敗  SQL Server數(shù)據(jù)庫頁面損壞故障修復

客戶名稱: 某新能源公司

數(shù)據(jù)類型: SQL Server 2019 on Linux

數(shù)據(jù)庫大小: 121 GB

故障檢測: 硬盤故障導致SQL Server數(shù)據(jù)庫恢復失敗，數(shù)據(jù)庫無法訪問。重啟SQL Server服務器依然無法解決問題。

故障分析：

ERRORLOG顯示數(shù)據(jù)庫頁面2538730損壞：

SQL Server detected a logical consistency-based I/O error: incorrect checksum (expected: 0x464ff469; actual: 0x48a7f5a1). It occurred during a read of page (1:2538730) in database ID 5 at offset 0x000004d79d4000 in file '/var/opt/mssql/data/realxxxxx.mdf'.  Additional messages in the SQL Server error log or operating system error log may provide more detail. This is a severe error condition that threatens database integrity and must be corrected immediately. Complete a full database consistency check (DBCC CHECKDB). This error can be caused by many factors; for more information, see SQL Server Books Online.

數(shù)據(jù)庫自動恢復報錯：

Error: 3313, Severity: 21, State: 5.

During redoing of a logged operation in database 'realxxxxx' (page (1:2538730) if any), an error occurred at log record ID (22047:85072:18). Typically, the specific failure is previously logged as an error in the operating system error log. Restore the database from a full backup, or repair the database.

Error: 3414, Severity: 21, State: 4.

An error occurred during recovery, preventing the database 'realxxxxx' (5:0) from restarting. Diagnose the recovery errors and fix them, or restore from a known good backup. If errors are not corrected or expected, contact Technical Support.

從Linux服務器下載數(shù)據(jù)庫mdf和ldf文件：

使用北京雨翰數(shù)據(jù)恢復公司自研的SQL Server數(shù)據(jù)庫恢復工具將數(shù)據(jù)庫所有對象包括用戶表、視圖、觸發(fā)器、存儲過程、外鍵約束、用戶和組等導出至新數(shù)據(jù)庫中。

修復結(jié)果: 數(shù)據(jù)恢復率達100% 客戶驗證沒有問題。

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