Setting up Oracle RAC

The following sections describe how to set up Oracle RAC to replace the default H2 database in your WSO2 product: 

Oracle Real Application Clusters (RAC) is an option that facilitates clustering and high availability in Oracle database environments. In the Oracle RAC environment, some of the commands used in oracle.sql are considered inefficient. Therefore, the product has a separate SQL script (oracle_rac.sql) for Oracle RAC. The Oracle RAC-friendly script is located in the dbscripts folder together with other .sql scripts.

Setting up the database and users

Follow the steps below to set up an Oracle RAC database.

1. Set environment variables <ORACLE_HOME>, PATH, and ORACLE_SID with the corresponding values (/oracle/app/oracle/product/11.2.0/dbhome_1, $PATH:<ORACLE_HOME>/bin, and orcl1 ) as follows:
   
2. Connect to Oracle using SQL*Plus as SYSDBA.
   

3. Create a database user and grant privileges to the user as shown below:

   Create user <USER_NAME> identified by password account unlock;
   grant connect to <USER_NAME>;
   grant create session, create table, create sequence, create trigger to <USER_NAME>;
   alter user <USER_NAME> quota <SPACE_QUOTA_SIZE_IN_MEGABYTES> on '<TABLE_SPACE_NAME>';
   commit;

4. Exit from the SQL*Plus session by executing the quit command.

Setting up the JDBC driver

Copy the Oracle JDBC libraries (for example, the <ORACLE_HOME>/jdbc/lib/ojdbc14.jar file) to the <PRODUCT_HOME>/lib/ directory. 

What's next

By default, all WSO2 products are configured to use the embedded H2 database. To configure your product with Oracle RAC, see Changing to Oracle RAC.