SOLVED

What is the difference between Differential Back up and Transaction Log Backup?

Copper Contributor

Hi Community,

 

Being quite new to SQL, may I know what is the difference between Differential Back up and Transaction Log Backup in SQL management studio 2016?

 

Also can advise what exactly am I backing up in Transactional Logs?

 

Can you also direct me or show me how to do a step by step Transactional Log backup?

 

Thank you so much!

1 Reply
best response confirmed by joshlabtech (Copper Contributor)
Solution

Differential Backup:

 

  • A differential backup captures only the changes made since the last full backup.
  • It includes all the changes made to the database since the last full backup, regardless of whether a transaction log backup has been performed.
  • Differential backups are generally larger than transaction log backups as they include more data changes.
  • It is suitable for scenarios where you need a more comprehensive backup and faster recovery compared to a full backup.

Transaction Log Backup:

 

  • A transaction log backup captures all the transactions made since the last transaction log backup.
  • It only includes the changes recorded in the transaction log, not the actual data pages.
  • Transaction log backups are smaller in size compared to differential backups because they only contain the log records.
  • They are essential for point-in-time recovery and provide a way to restore the database to a specific time.

To perform a step-by-step transaction log backup in SQL Server Management Studio 2016, follow these steps:

 

  1. Open SQL Server Management Studio (SSMS) and connect to the SQL Server instance containing your database.

  2. In the Object Explorer, expand the Databases node and locate the database for which you want to perform a transaction log backup.

  3. Right-click on the database, hover over Tasks, and then click on "Back Up..."

  4. In the "Back Up Database" window, select "Transaction Log" from the "Backup type" drop-down menu.

  5. In the "Destination" section, choose the destination where you want to store the backup file. You can either specify a disk location or use a tape drive.

  6. In the "Backup set" section, provide a unique name for the backup set, or you can use the default name.

  7. Click the "Add" button to specify any additional backup locations or devices if needed.

  8. Click "OK" to initiate the transaction log backup.

Once the backup is complete, you'll have a transaction log backup file that you can use for point-in-time recovery or to restore your database to a specific state.

 

Hope that helps!

 

1 best response

Accepted Solutions
best response confirmed by joshlabtech (Copper Contributor)
Solution

Differential Backup:

 

  • A differential backup captures only the changes made since the last full backup.
  • It includes all the changes made to the database since the last full backup, regardless of whether a transaction log backup has been performed.
  • Differential backups are generally larger than transaction log backups as they include more data changes.
  • It is suitable for scenarios where you need a more comprehensive backup and faster recovery compared to a full backup.

Transaction Log Backup:

 

  • A transaction log backup captures all the transactions made since the last transaction log backup.
  • It only includes the changes recorded in the transaction log, not the actual data pages.
  • Transaction log backups are smaller in size compared to differential backups because they only contain the log records.
  • They are essential for point-in-time recovery and provide a way to restore the database to a specific time.

To perform a step-by-step transaction log backup in SQL Server Management Studio 2016, follow these steps:

 

  1. Open SQL Server Management Studio (SSMS) and connect to the SQL Server instance containing your database.

  2. In the Object Explorer, expand the Databases node and locate the database for which you want to perform a transaction log backup.

  3. Right-click on the database, hover over Tasks, and then click on "Back Up..."

  4. In the "Back Up Database" window, select "Transaction Log" from the "Backup type" drop-down menu.

  5. In the "Destination" section, choose the destination where you want to store the backup file. You can either specify a disk location or use a tape drive.

  6. In the "Backup set" section, provide a unique name for the backup set, or you can use the default name.

  7. Click the "Add" button to specify any additional backup locations or devices if needed.

  8. Click "OK" to initiate the transaction log backup.

Once the backup is complete, you'll have a transaction log backup file that you can use for point-in-time recovery or to restore your database to a specific state.

 

Hope that helps!

 

View solution in original post