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                    <h1 id="test-dbamaxmemory">Test-DbaMaxMemory</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Chrissy LeMaire (@cl), netnerds.net</td>
</tr>
<tr>
<td><strong>Availability</strong></td>
<td>Windows, Linux, macOS</td>
</tr>
</tbody>
</table>
<p> </p>
<p>Want to see the source code for this command? Check out <a href="https://github.com/dataplat/dbatools/blob/master/public/Test-DbaMaxMemory.ps1">Test-DbaMaxMemory</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Test-DbaMaxMemory">Test-DbaMaxMemory</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Calculates the recommended value for SQL Server 'Max Server Memory' configuration setting. Works on SQL Server 2000-2014.</p>
<h2 id="description">Description</h2>
<p>Inspired by Jonathan Kehayias's post about SQL Server Max memory (<a href="http://bit.ly/sqlmemcalc">http://bit.ly/sqlmemcalc</a>), this script displays a SQL Server's: total memory, currently configured SQL max memory, and the calculated recommendation.</p>
<p>Jonathan notes that the formula used provides a <em>general recommendation</em> that doesn't account for everything that may be going on in your specific environment.</p>
<h2 id="syntax">Syntax</h2>
<pre><code>Test-DbaMaxMemory
    [-SqlInstance] &lt;DbaInstanceParameter[]&gt;
    [[-SqlCredential] &lt;PSCredential&gt;]
    [[-Credential] &lt;PSCredential&gt;]
    [-EnableException]
    [&lt;CommonParameters&gt;]

</code></pre>
<p> </p>
<h2 id="examples">Examples</h2>
<p> </p>
<h5 id="example-1">Example:  1</h5>
<pre><code>PS C:\&gt; Test-DbaMaxMemory -SqlInstance sqlcluster,sqlserver2012
</code></pre>
<p>Calculate the 'Max Server Memory' for SQL Server instances sqlcluster and sqlserver2012<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory
</code></pre>
<p>Calculate the 'Max Server Memory' settings for all servers within the SQL Server Central Management Server &quot;sqlcluster&quot;<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Get-DbaRegServer -SqlInstance sqlcluster | Test-DbaMaxMemory | Where-Object { $_.MaxValue -gt $_.Total } | Set-DbaMaxMemory
</code></pre>
<p>Find all servers in CMS that have Max SQL memory set to higher than the total memory of the server (think 2147483647) and set it to recommended value.<br></p>
<h3 id="required-parameters">Required Parameters</h3>
<h5 id="sqlinstance">-SqlInstance</h5>
<p>The target SQL Server instance or instances. <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>true (ByValue)</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="optional-parameters">Optional Parameters</h3>
<h5 id="sqlcredential">-SqlCredential</h5>
<p>Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).<br />
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.<br />
For MFA support, please use Connect-DbaInstance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="credential">-Credential</h5>
<p>Windows Credential with permission to log on to the server running the SQL instance<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="enableexception">-EnableException</h5>
<p>By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.<br />
This avoids overwhelming you with &quot;sea of red&quot; exceptions, but is inconvenient because it basically disables advanced scripting.<br />
Using this switch turns this &quot;nice by default&quot; feature off and enables you to catch exceptions with your own try/catch.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<p> </p>

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