Another post in the PowerShell Box of Tricks series. Here is another script which I use to save me time and effort during my daily workload enabling me to spend more time on more important (to me) things!

Todays question which I often get asked is What databases are on that server?

This is often a follow up to a question that requires the Find-Database script. It is often asked by support teams investigating issues. It can also be asked by developers checking the impact of other services on their DEV/UAT environments, by change managers investigating impact of changes, by service managers investigating the impact of downtime, when capacity planning for a new service and numerous other situations.

A simple quick and easy question made simpler with this function which can also be called when creating documentation

Show-DatabasesOnServer SERVERNAME 

and use the results as you need

This only shows you the name but if you need more information about your databases then have a look and see what you require.

Use `Get-Member` to see what is there. I ran the following code to count the number of Properties available for Databases (Using PowerShell V3 on SQL Server 2012 SP1 11.0.3350.0 )

154 Properties that you can examine and that is just for databases:-)

Picking out a few properties you could do something like this

If you want aliases for your column headings you will need to add a bit of code to the select.

For Example, maybe you want to Database Name as a heading and the Size in Gb (Its in Mb in the example above) You would need to create a hash table with a Label element and an Expression element. The Label is the column heading and the Expression can just be the data or a calculation on data.

So select Name becomes

select @{label="Database Name";Expression={$_.Name}}

Select @{label="Size GB";Expression={"{0:N3}" -f ($_.Size/1024)}}

$srv.databases|select @{label="Server";Expression={$_.Parent.name}},` 
@{label="Database Name";Expression={$_.Name}}, Owner, Collation, CompatibilityLevel,` 
RecoveryModel, @{label="Size GB";Expression={"{0:N3}" -f ($_.Size/1024)}}|` 
Format-Table -Wrap –AutoSize

and the results

and here is the full code

<#PSScriptInfo

.VERSION 1.0

.GUID 48bf0316-66c3-4253-9154-6fc5b28e482a

.AUTHOR Rob Sewell

.DESCRIPTION Returns Database Name and Size in MB for databases on a SQL     server
      
.COMPANYNAME 

.COPYRIGHT 

.TAGS SQL, Database, Databases, Size

.LICENSEURI 

.PROJECTURI 

.ICONURI 

.EXTERNALMODULEDEPENDENCIES 

.REQUIREDSCRIPTS 

.EXTERNALSCRIPTDEPENDENCIES 

.RELEASENOTES

#>
<#
    .Synopsis
    Returns the databases on a SQL Server and their size
    .DESCRIPTION
    Returns Database Name and Size in MB for databases on a SQL server
    .EXAMPLE
    Show-DatabasesOnServer

    This will return the user database names and sizes on the local machine     default instance
    .EXAMPLE
    Show-DatabasesOnServer -Servers SERVER1

    This will return the database names and sizes on SERVER1
    .EXAMPLE
    Show-DatabasesOnServer -Servers SERVER1 -IncludeSystemDatabases

    This will return all of the database names and sizes on SERVER1     including system databases
    .EXAMPLE
    Show-DatabasesOnServer -Servers 'SERVER1','SERVER2\INSTANCE'

    This will return the user database names and sizes on SERVER1 and     SERVER2\INSTANCE
    .EXAMPLE
    $Servers = 'SERVER1','SERVER2','SERVER3'
    Show-DatabasesOnServer -Servers $servers|out-file c:\temp\dbsize.txt

    This will get the user database names and sizes on SERVER1, SERVER2 and     SERVER3 and export to a text file c:\temp\dbsize.txt
    .NOTES
    AUTHOR : Rob Sewell https://blog.robsewell.com
    Initial Release 22/07/2013
    Updated with switch for system databases added assembly loading and     error handling 20/12/2015
    Some tidying up and ping check 01/06/2016
    
#>

Function Show-DatabasesOnServer 
{
    [CmdletBinding()]
    param (
        # Server Name or array of Server Names - Defaults to     $ENV:COMPUTERNAME
        [Parameter(Mandatory = $false, 
            ValueFromPipeline = $true,
            ValueFromPipelineByPropertyName = $true, 
            Position = 0)]
        $Servers = $Env:COMPUTERNAME,
        # Switch to include System Databases
        [Parameter(Mandatory = $false)]
        [switch]$IncludeSystemDatabases
    )
    [void][reflection.assembly]::LoadWithPartialName( "Microsoft.SqlServer.    Smo" );
    foreach ($Server in $Servers) {
        if ($Server.Contains('\')) {
            $ServerName = $Server.Split('\')[0]
            $Instance = $Server.Split('\')[1]
        }
        else {
            $Servername = $Server
        } 

        ## Check for connectivity
        if ((Test-Connection $ServerName -count 1 -Quiet) -eq $false) {
            Write-Error "Could not connect to $ServerName - Server did not     respond to ping"
            $_.Exception
            continue
        }
    
        $srv = New-Object ('Microsoft.SqlServer.Management.Smo.Server')     $Server

        if ($IncludeSystemDatabases) {
            try {
                $Return = $srv.databases| Select Name, Size
            }
            catch {
                Write-Error "Failed to get database information from $Server"
                $_.Exception
                continue
            }
        }
        else {
            try {
                $Return = $srv.databases.Where{$_.IsSystemObject -eq $false}    | Select Name, Size
            }
            catch {
                Write-Error "Failed to get database information from $Server"
                $_.Exception
                continue
            }
        }
        Write-Output "`n The Databases on $Server and their Size in MB `n"
        $Return
    }
}