Ensure that your existing nodes have the Oracle home environment variable set correctly.
Start DBCA by entering
dbca at the system prompt from the
\bin directory on an existing node.
DBCA performs certain CVU checks while running. However, you can also run CVU from the command line to perform various verifications.
Oracle Clusterware Administration and Deployment Guide for more information about CVU
From the List of Cluster Databases page, select the active Oracle RAC database to which you want to add an instance. Click Next and DBCA displays the List of Cluster Database Instances page showing the names of the existing instances for the Oracle RAC database that you selected.
On the Adding an Instance page, enter the instance name in the field at the top of this page if the instance name that DBCA provides does not match your existing instance naming scheme. Then select the new node name from the list.
If you installed the Oracle home with the Oracle Home User option, then DBCA prompts you for that password on this page.
Review the information on the Summary Page and click Finish to initiate instance addition operation. DBCA displays a progress dialog showing DBCA performing the instance addition operation.
Creating the OraMTS Service for Microsoft Transaction Server
Oracle Services for Microsoft Transaction Server (OraMTS) permit Oracle databases to be used as resource managers in Microsoft application-coordinated transactions. OraMTS acts as a proxy for the Oracle database to the Microsoft Distributed Transaction Coordinator (MSDTC). As a result, OraMTS provides client-side connection pooling and allows client components that leverage Oracle to participate in promotable and distributed transactions. In addition, OraMTS can operate with Oracle databases running on any operating system, given that the services themselves are run on Windows.
On releases earlier than Oracle Database 12c, the OraMTS service was created as part of a software-only installation. Starting with Oracle Database 12c, you must use a configuration tool to create this service.
Create the OraMTS service after adding a node or performing a software-only installation for Oracle RAC, as follows:
Open a command window.
Change directories to
Run the OraMTSCtl utility to create the OraMTS Service, where
host_name is a list of nodes on which the service should be created:
C:\..bin> oramtsctl.exe -new -host host_name
Oracle Services for Microsoft Transaction Server Developer's Guide for Microsoft Windows for more information about OraMTS, which allows Oracle databases to be used as resource managers in distributed transactions