How to Analyze SQL Server Log Transaction (LDF File) and Recover Corrupt SQL Data with SysTools SQL Log Analyzer

Analyzing SQL Server log transaction files (LDF files) can help you identify problems with your database, such as corrupt or lost data, and potentially recover that data. In this guide, we will walk through how to use SysTools SQL Log Analyzer to analyze and recover data from a corrupt SQL Server database.

Step 1: Download and Install SysTools SQL Log Analyzer

First, you will need to download and install SysTools SQL Log Analyzer on your computer. You can do this by visiting the SysTools website and following the installation instructions.

Step 2: Launch SysTools SQL Log Analyzer

Once you have installed the software, launch it from your computer. You should see a window that looks like this:

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/main-screen.png]

Step 3: Load LDF File

Click on the "Open" button in the top left corner of the window and select the LDF file that you want to analyze. You can also use the "Search" button to search for LDF files on your computer.

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/open-file.png]

Step 4: Select Recovery Mode

Once you have loaded the LDF file, you will need to select the recovery mode that you want to use. There are two options available:

- Online Database: This mode allows you to analyze the LDF file and recover data while the SQL Server database is still online. - Offline Database: This mode allows you to analyze the LDF file and recover data from a backup or a detached database.

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/recovery-mode.png]

Step 5: Preview LDF File

After you have selected the recovery mode, click on the "Preview" button to analyze the LDF file. This will give you a preview of the transactions that are recorded in the LDF file.

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/preview.png]

Step 6: Analyze LDF File

Once you have previewed the LDF file, you can start analyzing it. The software will display all the transactions that are recorded in the LDF file, including the transaction type, time stamp, and SQL statement. You can use the search feature to find specific transactions or filter the transactions by date range or transaction type.

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/log-records.png]

Step 7: Recover Data

After you have analyzed the LDF file, you can recover any data that was lost or corrupted. To do this, select the transactions that you want to recover and click on the "Export" button. You can export the data in various file formats, such as SQL script, CSV, or Excel.

[image: https://www.systoolsgroup.com/images/screenshots/sql-log-analyzer/export.png]

Conclusion:

In this guide, we have covered how to analyze SQL Server log transaction files (LDF files) using SysTools SQL Log Analyzer. By following these steps, you can identify problems with your database and potentially recover lost or corrupted data. Remember to always backup your data regularly to avoid data loss.