Why is my SQL transaction log so big?

How do I reduce the size of my SQL Server transaction log?

Transaction Log Shrinking Methods

  1. we are referring to the option available in SSMS by Right Click DB Name -> Tasks -> Shrink -> Files -> File type -> Log.
  2. does reduce the physical log file size by freeing up internal free space of the transaction log.

Why is my SQL log file huge?

There are a number of reasons a log file can fill to extreme sizes. The most common one by far is that the database is in full recovery model, and Transaction Log backups are not happening fast enough, or not happening at all. … ldf file is backed up (or checkpointed if you are in Simple Recovery).

Why is my transaction log so big SQL Server?

Presumably your database is in FULL recovery mode. If not, then make sure it is: Even if you are taking regular full backups, the log file will grow and grow until you perform a log backup – this is for your protection, not to needlessly eat away at your disk space.

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How do I make SQL log smaller?

To shrink the log in SSMS, right click the database, choose Tasks, Shrink, Files:

  1. On the Shrink File window, change the File Type to Log. …
  2. Shrink the log using TSQL. …
  3. DBCC SHRINKFILE (AdventureWorks2012_log, 1)

Is it OK to shrink transaction log?

Yes, it’s fine. It doesn’t affect any existing transactions, nor does it move any data around like database shrinking. Don’t shrink it right back though, because growing a log file takes effort.

How do I shrink a transaction log?

Shrink the transaction log

  1. Right-click the database and select Tasks -> Shrink -> Files.
  2. Change the type to Log .
  3. Under Shrink action, select Release unused space and click OK.

How do I reduce the size of my LDF file?

To shrink an ldf file, you use a command called DBCC SHRINKFILE (documented here). You can do this in SSMS by right-clicking the database, select “Tasks”, “Shrink” and “Files”. I recommend that you script the command into a query window and execute from there.

How do I reduce the size of my database?

To shrink a database

  1. In Object Explorer, connect to an instance of the SQL Server Database Engine, and then expand that instance.
  2. Expand Databases, and then right-click the database that you want to shrink.
  3. Point to Tasks, point to Shrink, and then click Database. Database. …
  4. Click OK.

How do I fix a full transaction log?


  1. Backing up the log.
  2. Freeing disk space so that the log can automatically grow.
  3. Moving the log file to a disk drive with sufficient space.
  4. Increasing the size of a log file.
  5. Adding a log file on a different disk.
  6. Completing or killing a long-running transaction.
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What happens if transaction log is full?

When the transaction log becomes full, SQL Server Database Engine issues a 9002 error. The log can fill when the database is online, or in recovery. … If the log fills during recovery, the Database Engine marks the database as RESOURCE PENDING. In either case, user action is required to make log space available.

How do I fix high VLF count in SQL Server?

Fixing a database with a high VLF count is a simple process:

  1. Check the current size of the transaction log.
  2. Backup the transaction log.
  3. Shrink the transaction log to as close to 0 KB as possible.
  4. Check that the VLF count is less than 50 (best if less than 10 at this point).

Should I shrink SQL log file?

Shrink log file size

To reduce the physical size of a physical log file, you must shrink the log file. This is useful when you know that a transaction log file contains unused space. … Before shrinking the transaction log, keep in mind Factors that can delay log truncation.

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