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	<title>RMS SEQFILE WBH - Revision history</title>
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	<updated>2026-05-02T17:19:57Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki.vmssoftware.com/index.php?title=RMS_SEQFILE_WBH&amp;diff=967&amp;oldid=prev</id>
		<title>Darya.zelenina: Created page with &quot;&#039;&#039;&#039;RMS_SEQFILE_WBH&#039;&#039;&#039; is a system parameter that enables or disables the RMS writebehind feature as a system default for any unshared sequential disk fil...&quot;</title>
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		<updated>2019-06-30T16:43:55Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039;RMS_SEQFILE_WBH&amp;#039;&amp;#039;&amp;#039; is a &lt;a href=&quot;/System_Parameters&quot; title=&quot;System Parameters&quot;&gt;system parameter&lt;/a&gt; that enables or disables the RMS writebehind feature as a system default for any unshared sequential disk fil...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;RMS_SEQFILE_WBH&amp;#039;&amp;#039;&amp;#039; is a [[System Parameters|system parameter]] that enables or disables the RMS writebehind feature as a system default for any unshared sequential disk file if the file is opened for image I/O with write access specified. This parameter is available on [[Alpha]] and [[Integrity]] servers only. The possible settings are the following: &lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! colspan=&amp;quot;col&amp;quot; | Setting&lt;br /&gt;
! colspan=&amp;quot;col&amp;quot; | Description&lt;br /&gt;
|-&lt;br /&gt;
| 0 (default) &lt;br /&gt;
| Do not enable writebehind feature. Preserve prior behavior of using writebehind only if the user requests it by setting RAB$V_WBH in RAB$L_ROP.&lt;br /&gt;
|-&lt;br /&gt;
| 1&lt;br /&gt;
| Enable writebehind feature as system default, including the allocation of at least two local buffers.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
RMS_SEQFILE_WBH is a DYNAMIC parameter.&lt;br /&gt;
&lt;br /&gt;
[[Category:System Parameters]]&lt;/div&gt;</summary>
		<author><name>Darya.zelenina</name></author>
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