<div>
It could be either/or but not both.<br />
<br />
Oracle Real Application Cluster (RAC) is the multimode cluster name.
</div>


It could be either/or but not both.

Oracle Real Application Cluster (RAC) is the multimode cluster name.

<div>
<div class="content wysiwyg-content">
Very novice question. &nbsp;Thanks.
</div>
</div>


Is Oracle Database 11g a multi-node cluster or a single node database or it could be both?

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.