Springboot H2 in memory database - cannot connect - spring-boot

Question

I have configured H2 as follows for my springboot app:
spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
# Enabling H2 Console
spring.h2.console.enabled=true
# Custom H2 Console URL
spring.h2.console.path=/h2
When I go to log in it says it cannot find the database. I am typing explicitly jdbc:h2:mem:testdb like this:
What else can I do to troubleshoot? I do have a data.sql file which is creating the schema and putting in sample data.

Answer 1

I read through some other tutorials which mentioned including jdbc or jpa in maven/gradle. When I added either of these then H2 seemed to work just fine.

Answer 2

Had same problems, what I did to make this work was:
application.properties:
spring.h2.console.enabled=true
spring.h2.console.path=/h2-console
spring.datasource.url=jdbc:h2:mem:uniqueNewName <<testdb did not work!
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
springspring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
pom.xml:
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.oracle.database.jdbc/ojdbc10 -->
<dependency>
<groupId>com.oracle.database.jdbc</groupId>
<artifactId>ojdbc10</artifactId>
<version>19.8.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
Don't ask me why, but I had to add jbdc and spring-boot-starter-data-jpa to my dependencies to make this work.