Using the embedded H2 database

IAM may be started with an embedded H2 database which can be used for testing and demoing. It roughly offers the following features:

  • Implemented as "IAM module" (like the Loginapp, Adminapp, etc.)
  • H2 Web Console (web application with database browser and SQL shell)
  • Automatic initial schema creation (if no schema deployed)

To enable the embedded H2 database, add "h2" to the list of IAM modules in the instance configuration:

Enable H2 in IAM instance (together with Adminapp and Service Container in this example)

## Applications to enable. Comma separated list.
## Possible values: adminapp,loginapp,transaction-approval,service-container,webservice,h2
iam.modules = adminapp,service-container,h2

To configure the database, the following instance properties may be used (values shown in the example are default values):

H2 Properties in

# URL path of the H2 web console
iam.h2.url.path = /${}-h2

# Directory where H2 data is kept = instances/${}/h2

# JDBC URL to connect to the database (choose a different port for each instance)
iam.h2.jdbc.url = jdbc:h2:tcp://localhost:9001/iamdb

# JDBC username
iam.h2.jdbc.user = airlock

# JDBC password
iam.h2.jdbc.password = ....

Run the following command to get up-to-date H2 default settings:

iam default-parameters | grep iam.h2

If separating the Loginapp from the Adminapp of IAM (seeĀ Sandboxing with profiles), it is a good idea to run the H2 database in the Adminapp part.