It finaly worked with my db connexion. It was a spring boot configuration problem. Basically, the application.yaml should be like :
spring:
profiles:
active: “dev”
main:
banner-mode: “off”
datasource:
url: jdbc:oracle:thin:@ldap://ldap-tns1:4035/cn=OracleContext,dc=oracle,dc=chuv/camunda_db_dev ldap://ldap-tns2:4035/cn=OracleContext,dc=oracle,dc=chuv/camunda_db_dev
username: camunda_app
password: XXXXXXXX
driver-class-name: oracle.jdbc.OracleDriver
sql-script-encoding: UTF-8
xa.data-source-class-name: oracle.jdbc.xa.client.OracleXADataSource