67 lines
4.4 KiB
HTML
67 lines
4.4 KiB
HTML
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<meta name="DC.Title" content="The commit protocol of a committable resource" />
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<meta name="abstract" content="Commit protocol is the capability a resource has to participate in one-phase or two-phase commit processing. Local resources, except API committable resources, are always two-phase resources." />
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<title>The commit protocol of a committable resource</title>
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<body id="rzakjprotocol"><a name="rzakjprotocol"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">The commit protocol of a committable resource</h1>
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<div><p><dfn class="term">Commit protocol</dfn> is the capability a resource has to
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participate in one-phase or two-phase commit processing. Local resources,
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except API committable resources, are always two-phase resources.</p>
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<p>If a committable resource resides on an independent disk pool and the commitment
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definition resides on a different disk pool, the resource is not considered
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as a local resource or a two-phase resource.</p>
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<p>A two-phase resource is also called a <dfn class="term">protected resource</dfn>.
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Remote resources and API committable resources must be registered
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as one-phase resources or two-phase resources when they are placed under commitment
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control. The following table shows what types of committable resources can
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coexist in a commitment definition with a one-phase resource.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" id="d0e30">Resource type</th>
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<th valign="top" id="d0e32">Can coexist with</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e30 ">One-phase API resource</td>
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<td valign="top" headers="d0e32 ">Other local resources. No remote resources.</td>
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</tr>
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<tr><td valign="top" headers="d0e30 ">One-phase remote resource</td>
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<td valign="top" headers="d0e32 ">Other one-phase resources at the same location. No local resources.</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakjresources.htm" title="When you place an object under commitment control, it becomes a committable resource. It is registered with the commitment definition. It participates in each commit operation and rollback operation that occurs for that commitment definition.">How commitment control works with objects</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakjiasp.htm" title="Independent disk pools and independent disk pool groups, can each have a separate i5/OS SQL database. You can use commitment control with these databases.">Commitment control and independent disk pools</a></div>
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</div>
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</div>
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</body>
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