<div class="content"><p>The ICatalogSession <a href="3f01a312-3391-4109-a96e-95358babf191#gt_95913fbd-3262-47ae-b5eb-18e6806824b9" data-linktype="relative-path">interface</a> provides methods
for <a href="5fe470fe-8067-470c-a7d7-30553c3dc1f7" data-linktype="relative-path">Catalog Version
Negotiation (section 3.1.4.1)</a> and for <a href="bf483305-7f33-4db3-8681-9ca98bb6c058" data-linktype="relative-path">Multiple-partition Support
Capability Negotiation (section 3.1.4.3)</a>. This interface inherits
from <a href="../ms-dcom/2b4db106-fb79-4a67-b45f-63654f19c54c" data-linktype="relative-path">IUnknown</a>,
as specified in <a href="../ms-dcom/4a893f3d-bd29-48cd-9f43-d9777a4415b0" data-linktype="relative-path">[MS-DCOM]</a>
section 3.1.1.5.8.</p><p>To receive incoming remote calls for this interface, the
server MUST implement a DCOM Object Class with the <a href="3f01a312-3391-4109-a96e-95358babf191#gt_e433c806-6cb6-46a2-bb95-523df8818c99" data-linktype="relative-path">CLSID</a> CLSID_COMAServer (see
section <a href="3afd05f6-01a3-4920-951f-f9c703a3b0f1" data-linktype="relative-path">1.9</a>) using the <a href="3f01a312-3391-4109-a96e-95358babf191#gt_c4813fc3-b2e5-4aa3-bde7-421d950d68d3" data-linktype="relative-path">UUID</a>
{182C40FA-32E4-11D0-818B-00A0C9231C29} for this interface.</p><p>Besides the methods of IUnknown, this interface includes the
following methods.</p><p>Methods in RPC Opnum Order</p><table><thead>
  <tr>
   <th>
   <p>Method</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>Opnum3NotUsedOnWire</p>
  </td>
  <td>
  <p>Reserved for local use.</p>
  <p>Opnum: 3</p>
  </td>
 </tr><tr>
  <td>
  <p>Opnum4NotUsedOnWire</p>
  </td>
  <td>
  <p>Reserved for local use.</p>
  <p>Opnum: 4</p>
  </td>
 </tr><tr>
  <td>
  <p>Opnum5NotUsedOnWire</p>
  </td>
  <td>
  <p>Reserved for local use.</p>
  <p>Opnum: 5</p>
  </td>
 </tr><tr>
  <td>
  <p>Opnum6NotUsedOnWire</p>
  </td>
  <td>
  <p>Reserved for local use.</p>
  <p>Opnum: 6</p>
  </td>
 </tr><tr>
  <td>
  <p><a href="207f7862-b090-4fbc-9a25-e452fcc7e132" data-linktype="relative-path">InitializeSession</a></p>
  </td>
  <td>
  <p>Performs <a href="3f01a312-3391-4109-a96e-95358babf191#gt_0944227d-0566-49e1-989f-2fff6e02542d" data-linktype="relative-path">catalog</a> version
  negotiation.</p>
  <p>Opnum: 7</p>
  </td>
 </tr><tr>
  <td>
  <p><a href="adc7605c-e7c0-4078-afea-8654fa2a9cb3" data-linktype="relative-path">GetServerInformation</a></p>
  </td>
  <td>
  <p>Performs capability negotiation for the
  multiple-partition support capability.</p>
  <p>Opnum: 8</p>
  </td>
 </tr></tbody></table><p>In the previous table, the phrase &#34;Reserved for local
use&#34; means that the client MUST NOT send the <a href="3f01a312-3391-4109-a96e-95358babf191#gt_e127848e-c66d-427d-b3aa-9f904fa4ada7" data-linktype="relative-path">opnum</a>, and the server
behavior is undefined because it does not affect interoperability.<a id="Appendix_A_Target_284"></a><a aria-label="Product behavior note 284" href="022303e7-5044-4e20-8024-30dc89bb5f69#Appendix_A_284" data-linktype="relative-path">&lt;284&gt;</a></p><p>All methods MUST NOT throw exceptions.</p></div>