Can we create processEngine without database configuration?

Hi,

I need to create process engine without database configuration and start the process , by default camunda uses h2 db if no database is configured.
is it possible to create a process engine without any database configuration?
Please let me know.

Got below exception:
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: org.h2.Driver
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.initializeDriver(UnpooledDataSource.java:215)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:194)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:190)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:92)
at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:375)
at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:84)
at org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl.initDatabaseType(ProcessEngineConfigurationImpl.java:1077)
at org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl.initDataSource(ProcessEngineConfigurationImpl.java:1036)
at org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:744)
at org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:709)
at com.test.camunda.app.CamundaProcessEngineConfiguration.createProcessEngine(CamundaProcessEngineConfiguration.java:21)
at com.test.camunda.app.CamundaProcessEngineConfiguration.main(CamundaProcessEngineConfiguration.java:56)
Exception Process engine persistence exception

The Camunda process engine does not work without a relational database.