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The following sections describe how to replace the default H2 database with embedded Derby:

Table of Contents

maxLevel	3
minLevel	3

...

Edit the default datasource configuration in the <PRODUCT_HOME>/repository/conf/datasources/m aster-datasources.xml file as shown below.

Code Block

language	html/xml

<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:derby://localhost:1527/db;create=true</url>
               <username>regadmin</username>
               <password>regadmin</password>
               <driverClassName>org.apache.derby.jdbc.EmbeddedDriver</driverClassName>
               <maxActive>80</maxActive>
               <maxWait>60000</maxWait>
               <minIdle>5</minIdle>
               <testOnBorrow>true</testOnBorrow>
               <validationQuery>SELECT 1</validationQuery>
               <validationInterval>30000</validationInterval>
			   <defaultAutoCommit>false</defaultAutoCommit>
         </configuration>
     </definition>
</datasource>

The elements in the above configuration are described below:

Element Description

url The URL of the database. The default port for a DB2 instance is 50000.

username and password The name and password of the database user.

driverClassName The class name of the database driver.

maxActive The maximum number of active connections that can be allocated at the same time from this pool. Enter any negative value to denote an unlimited number of active connections.

maxWait The maximum number of milliseconds that should elapse (when there are no available connections in the pool) before the system throws an exception. You can enter zero or a negative value to wait indefinitely.

minIdle The minimum number of active connections that can remain idle in the pool without extra ones being created. Enter zero to create none.

testOnBorrow

The indication of whether objects will be validated before being borrowed from the pool. If the object fails to validate, it will be dropped from the pool and another attempt will be made to borrow another.

validationQuery The SQL query that will be used to validate connections from this pool before returning them to the caller.

validationInterval The indication to avoid excess validation, and only run validation at the most, at this frequency (time in milliseconds). If a connection is due for validation but has been validated previously within this interval, it will not be validated again.

defaultAutoCommit

You can add this property and set it to false as shown above to disable auto committing for your datasource. Disabling this property will allow multiple SQL statements to be committed to the datasource as one transaction.

Info
Check the `master-`datasources`.`xml file of your WSO2 product to verify if auto commit is disabled for the product by default.

Info
For more information on other parameters that can be defined in the `<PRODUCT_HOME>/repository/conf/datasources/` `master-datasources.xml` file, see Tomcat JDBC Connection Pool.

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