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

Table of Contents

Tip

title	Before you begin

You need

Embedded H2 before following the steps to configure your product with it. For more information, see

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Following are the datasource configuration properties:

Property	Description
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 enter a negative value 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. 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, or 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.

Info
For more information on other parameters that can be defined in the datasource `xml` file, see Tomcat JDBC Connection Pool.

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You can create the database tables manually by executing the H2 script in the shell or web console:

Database	DB Script name and Location
`WSO2_CARBON_DB`	`<IoTS_HOME>/dbscripts//h2.sql`
`WSO2AM_DB`	`<IoTS_HOME>/dbscripts//apimgt/h2.sql`
`WSO2_MB_STORE_DB`	`<IoTS_HOME>/wso2/broker/dbscripts/mb-store/h2.sql`
`WSO2_ANALYTICS_EVENT_STORE_DB`


`WSO2_ANALYTICS_PROCESSED_DATA_STORE_DB`


`WSO2_METRICS_DB`	`<IoTS_HOME>/dbscripts//metrics/h2.sql`
`DM_DS`	`<IoTS_HOME>/dbscripts//cdm/h2.sql`
Device plugin databases Example: `Arduino_DB`	`<IoTS_HOME>/dbscripts//cdm/plugins/<PLUGIN_NAME>/h2.sql` Example: `<IoTS_HOME>/dbscripts//cdm/plugins/android/h2.sql`

Follow the steps below to run the H2 script in web console:

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