Though currently commented out, I have also included an additional clause that can be used if you are looking for a particular type of transaction. Though you can certainly call the function without specifying any particular columns within the SELECT, I have called the most relevant columns in the example below which pertain to the type of information I am wanting to review. Doing this will return every record in the log. Both of these parameters can also be set to NULL. The fn_dblog() function accepts two parameters, the starting Log Sequence Number and the ending Log Sequence Number, also called LSN. This is an undocumented function which allows you to view transaction log records for the current database. If you’re not familiar with querying a transaction log the first thing you’ll need to be aware of is the fn_dblog() function. Since I had only recently put additional monitoring tools in place to look for this type of activity I wanted to research exactly what was going on to determine if this was normal behavior since the account in question is used by the application and has elevated permissions.Īfter doing some initial research I determined the best course of action was to query the previous day’s transaction log for the database and review all the activity being performed by the account in question. Repeat this process to add your logoff script.I recently ran into a scenario where a particular SQL account was executing ALTER TABLE commands on a database. Browse to the script, or if you know the complete path with the extension, enter it in the text field.
![sql server user activity audit script sql server user activity audit script](https://venturebeat.com/wp-content/uploads/2020/01/maxresdefault-4.jpg)
Select the PowerShell Scripts tab and click Add.
Sql server user activity audit script windows#
To add your logon script, navigate to User Configuration > Policies > Windows Settings > Scripts > Logon. Launch the Group Policy Management MMC snap-in, and create a new Group Policy Object (GPO) in the organizational unit (OU) that contains the computer objects of the logons and logoffs you wish to audit.
Sql server user activity audit script code#
For this guide, I will be adding both snippets of code to my existing logon and logoff scripts located on my domain's NETLOGON share.įinally, we are going to deploy the logon and logoff scripts through Group Policy. Save both scripts to a network location you can access with Group Policy Management. $SQLQUERY = "INSERT INTO dbo.WSLogoffs (Date,Time,Username,Domain,Computer) VALUES = New-Object Īgain, make sure you change the values for $SQLServer and $SQLDB to the SQL server and database you'd like to use. To create the script that will write all user logoff events to the dbo.WSLogoffs table, create a new script in PowerShell, and then copy and paste the following: # Declare Variables This script is going to write all user logon events to the dbo.WSLogons table you just created. Make sure you change the values for $SQLServer and $SQLDB to the SQL server and database you'd like to use. $command.CommandText = $Date) | $Time) | $Username) | $Domain) | $Computer) | Out-Null $connection.ConnectionString = $SQLCONNECTION
![sql server user activity audit script sql server user activity audit script](https://venturebeat.com/wp-content/uploads/2018/11/samples_nlp.png)
$SQLQUERY = "INSERT INTO dbo.WSLogons (Date,Time,Username,Domain,Computer) VALUES = New-Object $SQLCONNECTION = "Server=$SQLSERVER Database=$SQLDB Integrated Security = True"
![sql server user activity audit script sql server user activity audit script](https://image.slidesharecdn.com/howtoencryptyourscriptonsqlserver-110420224205-phpapp02/95/how-to-encrypt-your-script-on-sql-server-6-728.jpg)
Launch PowerShell, and then copy and paste the following: # Declare Variables With our tables and permissions set up, we can now create the logon and logoff scripts that will gather and write the relevant information to the database tables. But this time, grant the necessary securable permissions for the dbo.WSLogoffs table.
![sql server user activity audit script sql server user activity audit script](https://www.syskit.com/wp-content/uploads/2016/09/system-perfromance-overview.png)
Repeat the previous steps and create a new database user for DOMAIN\dbo.WSLogoffs. When you expand your database, you should now see the dbo.WSLogons and dbo.WSLogoffs tables. To add the dbo.WSLogoffs table, repeat the previous steps using the following query: USE Įxecute the query and refresh your database. Execute the query and refresh your database. If your environment contains NetBIOS names longer than 15 characters, you will need to increase the number. Also, note that the number 15 represents the number of allowed characters for entry into a table cell. Make sure to change the text "WKS_SCS" to the name of the database where you want to create your logon event table. This query will create the dbo.WSLogons table. Send the keystroke Ctrl+N to create a new query, and then copy and paste the following: USE