functions/Start-DbaXESession.ps1
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function Start-DbaXESession { <# .SYNOPSIS Starts Extended Events sessions. .DESCRIPTION This script starts Extended Events sessions on a SQL Server instance. .PARAMETER SqlInstance Target SQL Server. You must have sysadmin access and server version must be SQL Server version 2008 or higher. .PARAMETER SqlCredential Allows you to login to servers using SQL Logins instead of Windows Authentication (AKA Integrated or Trusted). To use: $scred = Get-Credential, then pass $scred object to the -SqlCredential parameter. Windows Authentication will be used if SqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials. To connect as a different Windows user, run PowerShell as that user. .PARAMETER Session Only start specific Extended Events sessions. .PARAMETER AllSessions Start all Extended Events sessions on an instance, ignoring the packaged sessions: AlwaysOn_health, system_health, telemetry_xevents. .PARAMETER InputObject Internal parameter to support piping from Get-DbaXESession .PARAMETER StopAt Specifies a datetime at which the session will be stopped. This is done via a self-deleting schedule. .PARAMETER EnableException By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch. .NOTES Tags: ExtendedEvent, XE, Xevent Author: Doug Meyers Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Start-DbaXESession .EXAMPLE Start-DbaXESession -SqlInstance sqlserver2012 -AllSessions Starts all Extended Event Session on the sqlserver2014 instance. .EXAMPLE Start-DbaXESession -SqlInstance sqlserver2012 -Session xesession1,xesession2 Starts the xesession1 and xesession2 Extended Event sessions. .EXAMPLE Start-DbaXESession -SqlInstance sqlserver2012 -Session xesession1,xesession2 -StopAt (Get-Date).AddMinutes(30) Starts the xesession1 and xesession2 Extended Event sessions and stops them in 30 minutes. .EXAMPLE Get-DbaXESession -SqlInstance sqlserver2012 -Session xesession1 | Start-DbaXESession Starts the sessions returned from the Get-DbaXESession function. #> [CmdletBinding(DefaultParameterSetName = 'Session')] param ( [parameter(Position = 1, Mandatory, ParameterSetName = 'Session')] [parameter(Position = 1, Mandatory, ParameterSetName = 'All')] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [parameter(ParameterSetName = 'Session')] [parameter(ParameterSetName = 'All')] [PSCredential]$SqlCredential, [parameter(Mandatory, ParameterSetName = 'Session')] [Alias("Sessions")] [object[]]$Session, [datetime]$StopAt, [parameter(Mandatory, ParameterSetName = 'All')] [switch]$AllSessions, [parameter(Mandatory, ValueFromPipeline, ParameterSetName = 'Object')] [Microsoft.SqlServer.Management.XEvent.Session[]]$InputObject, [switch]$EnableException ) begin { # Start each XESession function Start-XESessions { [CmdletBinding()] param ([Microsoft.SqlServer.Management.XEvent.Session[]]$xeSessions) foreach ($xe in $xeSessions) { $instance = $xe.Parent.Name $session = $xe.Name if (-Not $xe.isRunning) { Write-Message -Level Verbose -Message "Starting XEvent Session $session on $instance." try { $xe.Start() } catch { Stop-Function -Message "Could not start XEvent Session on $instance." -Target $session -ErrorRecord $_ -Continue } } else { Write-Message -Level Warning -Message "$session on $instance is already running." } Get-DbaXESession -SqlInstance $xe.Parent -Session $session } } function New-StopJob { [CmdletBinding()] param ( [Microsoft.SqlServer.Management.XEvent.Session[]]$xeSessions, [datetime]$StopAt ) foreach ($xe in $xeSessions) { $server = $xe.Parent $session = $xe.Name $name = "XE Session Stop - $session" # Setup the schedule time $time = ($StopAt).ToString("HHmmss") # Create the schedule $schedule = New-DbaAgentSchedule -SqlInstance $server -Schedule $name -FrequencyType Once -StartTime ($StopAt).ToString("HHmmss") -Force # Create the job and attach the schedule $job = New-DbaAgentJob -SqlInstance $server -Job $name -Schedule $schedule -DeleteLevel Always -Force # Create the job step $sql = "ALTER EVENT SESSION [$session] ON SERVER STATE = stop;" $jobstep = New-DbaAgentJobStep -SqlInstance $server -Job $job -StepName 'T-SQL Stop' -Subsystem TransactSql -Command $sql -Force } } } process { if ($InputObject) { Start-XESessions $InputObject } else { foreach ($instance in $SqlInstance) { $xeSessions = Get-DbaXESession -SqlInstance $instance -SqlCredential $SqlCredential # Filter xeSessions based on parameters if ($Session) { $xeSessions = $xeSessions | Where-Object { $_.Name -in $Session } } elseif ($AllSessions) { $systemSessions = @('AlwaysOn_health', 'system_health', 'telemetry_xevents') $xeSessions = $xeSessions | Where-Object { $_.Name -notin $systemSessions } } Start-XESessions $xeSessions if ($StopAt) { New-StopJob -xeSessions $xeSessions -StopAt $stopat } } } } } |