Shrinking the db_ApexCentral_log.ldf File Size on Microsoft SQL Server 2008 (or later)

Back up the Apex Central database using the SQL Server Management Studio.
Purge the transaction log.
On the SQL Server, click Programs → SQL Server Management Studio to open the SQL Server Management Studio.
Select the SQL server and specify the authentication credentials if prompted.
Right-click db_ApexCentral and select Properties.

The Properties dialog box appears.
Click Options.

The Options work area appears.
Select Simple from the Recovery model: list.
Click OK.