tests/Test-SqlIndexFragmentation.ps1
|
function Test-SqlIndexFragmentation { [CmdletBinding()] param ( [parameter()][string] $TestName = "SQL Database Index Fragmentation Status", [parameter()][string] $TestGroup = "operation", [parameter()][string] $Description = "Validate SQL database index fragmentation status", [parameter()][hashtable] $ScriptParams ) try { $startTime = (Get-Date) [int]$MinValue = Get-CmHealthDefaultValue -KeySet "sqlserver:IndexFragThresholdPercent" -DataSet $CmHealthConfig Write-Log -Message "min index fragmentation pct = $MinValue" [System.Collections.Generic.List[PSObject]]$tempdata = @() # for detailed test output to return if needed $stat = "PASS" $except = "WARNING" $msg = "No indexes were fragmented more than $MinValue percent" $query = "SELECT dbschemas.[name] as 'Schema', dbtables.[name] as 'Table', dbindexes.[name] as 'Index', indexstats.avg_fragmentation_in_percent, indexstats.page_count FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS indexstats INNER JOIN sys.tables dbtables on dbtables.[object_id] = indexstats.[object_id] INNER JOIN sys.schemas dbschemas on dbtables.[schema_id] = dbschemas.[schema_id] INNER JOIN sys.indexes AS dbindexes ON dbindexes.[object_id] = indexstats.[object_id] AND indexstats.index_id = dbindexes.index_id WHERE indexstats.database_id = DB_ID() and indexstats.avg_fragmentation_in_percent > $($MinValue) ORDER BY indexstats.avg_fragmentation_in_percent desc" $res = Get-CmSqlQueryResult -Query $query -Params $ScriptParams $result = $res | ForEach-Object { [pscustomobject]@{ Schema = $_.Schema Table = $_.Table Index = $_.Index AvgFragPct = [math]::Round($_.avg_fragmentation_in_percent,2) PageCount = $_.PageCount } } if ($result.Count -gt 1) { $stat = $except $msg = "$($result.Count) indexes were fragmented more than $MinValue percent" $result | Foreach-Object { $tempdata.Add( [pscustomobject]@{ Table = $($_.Table) Index = $($_.Index) FragPct=$($_.AvgFragPct) } ) } } } catch { $stat = 'ERROR' $msg = $_.Exception.Message -join ';' } finally { Write-Output $([pscustomobject]@{ TestName = $TestName TestGroup = $TestGroup TestData = $tempdata Description = $Description Status = $stat Message = $msg RunTime = $(Get-RunTime -BaseTime $startTime) Credential = $(if($ScriptParams.Credential){$($ScriptParams.Credential).UserName} else { $env:USERNAME }) }) } } |