Setting up with Oracle RAC

Oracle Real Application Clusters (RAC) is an option for the Oracle Database for clustering and high availability in Oracle database environments. In Oracle RAC environment, some of the commands used in oracle.sql is considered inefficient (refer to Setting up with Oracle ). Therefore WSO2 ESB has a separate SQL script oracle_rac.sql for Oracle RAC. The Oracle RAC-friendly script is located in dbscripts folder together with other .sql scripts.

Tip

To test products on a Oracle RAC, please, rename oracle_rac.sql to oracle.sql before running -Dsetup.

Setup User

1. Set environment variables ORACLE_HOME, PATH, ORACLE_SID with the corresponding values /oracle/app/oracle/product/11.2.0/dbhome_1, $PATH:$ORACLE_HOME/bin, orcl1.

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, dba to USER_NAME;
commit;

For example,

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

SQL> quit

Setup Configuration File

1. Edit the default database configuration defined in the master-datasources.xml file located at $CARBON_HOME/repository/conf/datasources directory as follows. Both the database configurations in registry.xml and user-mgt.xml refer this data source.

Replace these settings with your own custom values.

<datasource>
     <name>WSO2_CARBON_DB</name>
     <description>The datasource used for registry and user manager</description>
     <jndiConfig>
          <name>jdbc/WSO2CarbonDB</name>
     </jndiConfig>
     <definition type="RDBMS">
          <configuration>
            <url>jdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on)
   			       (ADDRESS=(PROTOCOL=TCP)(HOST=racnode1) (PORT=1521))
   			       (ADDRESS=(PROTOCOL=TCP)(HOST=racnode2) (PORT=1521))
   			       (CONNECT_DATA=(SERVICE_NAME=service_name)))</url>
            <username>regadmin</userName>
            <password>regadmin</password>
            <driverClassName>oracle.jdbc.driver.OracleDriver</driverClassName>
            <maxActive>80</maxActive>
            <maxWait>60000</maxWait>
            <minIdle>5</minIdle>
            <testOnBorrow>true</testOnBorrow>
            <validationQuery>SELECT 1 FROM DUAL</validationQuery>
            <validationInterval>30000</validationInterval>
          </configuration>
     </definition>
</datasource>

The database configuration options

url - The URL of the database.
username - The name of the database user.
password - The password of the database user.
driverClassName - The class name of the database driver.
maxActive - The maximum number of active connections that can be allocated from this pool at the same time or negative for no limit.
maxWait - The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception or <= 0 to wait indefinitely.
minIdle - The minimum number of active connections that can remain idle in the pool without extra ones being created or 0 to create none.

Copy JDBC Driver

Copy the Oracle JDBC libraries to $CARBON_HOME/repository/components/lib . For example, - $ORACLE_HOME/jdbc/lib/ojdbc14.jar .

Note: Remove old database driver from $CARBON_HOME/repository/components/dropins ,when you upgrade the database driver.

Create Database Tables

Database tables can be created either manually by running scripts or automatically by using start-up parameters.

Using Scripts

Database tables can be created manually by logging in to the created database and running the following scripts in SQL*Plus:

SQL> @${CARBON_HOME}/dbscripts/oracle.sql

Start the WSO2 ESB.

$ ./${CARBON_HOME}/bin/wso2server.sh

Using Start-up Parameters

For Windows users:

$CARBON_HOME/bin/wso2server.bat -Dsetup

To create the database tables when starting the WSO2 ESB for the first time.

For Linux Users

$ ./${CARBON_HOME}/bin/wso2server.sh -Dsetup