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Follow the instructions below to set up the IBM DB2.The following sections describe how to replace the default H2 databases with IBM DB2: 

Preparing DB2 Database

Download the latest version of DB2 Express-C (http://www-01.ibm.com/software/data/db2/express/download.html) and install it on your computer.

Setup Database and Users

Using DB2 Command Processor

1. Run DB2 console. Run db2start in command line to open the DB2

db2=> db2start

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2. Create the database.

db2=> create database DB_NAME

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3. Before you can issue an SQL statement, you have to connect to a database. Establish the connection:

db2=> connect to DB_NAME user USER_NAME using PASSWORD

4. Grant required permissions for users.

db2=> connect to DB_NAME
db2=> grant AUTHORITY on database to user USER_NAME

(AUTHORITY : SYSADM,SYSCTRL,SYSMAINT,SYSMON,DBADM or LOAD)

For example,

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Using DB2 Control Center

1. Open the DB2 control center using the command db2cc. For example,

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2. Create a new database. Right click the "All Databases" entry in the Control center tree (inside the object browser) and click "Create Database"-->"Standard". Follow the steps in the "Create new Database" wizard.

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3. Create the new database users from "User and Group Objects" entry for your newly created database.

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4. Give required permissions to newly created users.

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Setup Configuration Files

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

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<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:db2://SERVER_NAME:PORT/DB_NAME</url>
                <username>regadmin</username>
                <password>regadmin</password>
                <driverClassName>com.ibm.db2.jcc.DB2Driver</driverClassName>
                <maxActive>80</maxActive>
                <maxWait>360000</maxWait>
                <minIdle>5</minIdle>
                <testOnBorrow>true</testOnBorrow>
                <validationQuery>SELECT 1</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.

Setup DB2 jdbc Drivers

Copy the DB2 jdbc Drivers ( db2jcc.jar and db2jcc_license_c0u.jar) from $DB2_HOME\SQLLIB\java to $CARBON_HOME/repository/components/lib directory.

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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 executing the following script in DB2 Express C command editor.

$CARBON_HOME/dbscripts/db2.sql

Using start-up Parameters

Database tables can be created when starting the product for the first time using the startup parameters as follows.

• For Windows:

  Code Block
  <CARBON_HOME>/bin/wso2server.bat -Dsetup

For Linux:

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