I just did this today, and I had to add the following to my settings.xml.
<spring.datasource.username>OHDSI</spring.datasource.username>
<spring.datasource.password>*</spring.datasource.password>
<spring.datasource.url>jdbc:oracle:thin:@134.68.31.135:1521:i2b2idp</spring.datasource.url>
<flyway.datasource.username>OHDSI</flyway.datasource.username>
<flyway.datasource.password>*</flyway.datasource.password>
<flyway.datasource.url>jdbc:oracle:thin:@134.68.31.135:1521:i2b2idp</flyway.datasource.url>
I also had problems with Flyway, which was another headache. See my message on this thread.