H2 Aktivieren zuerst Remote -Datenbankerstellung
//Try this in your application.properties. It worked for me:
spring.datasource.url=jdbc:h2:~/test
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
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