the logs contains: 
2017-11-07 07:52:11,397 HealthCheckWatchdog:thread-2 WARN [c.a.t.healthcheck.concurrent.SupportHealthCheckTask] Health check Ende der Lebensdauer was unable to complete within the timeout of 20000.
2017-11-07 07:52:11,404 Caesium-1-2 ERROR ServiceRunner [c.a.t.h.persistence.service.HealthStatusPersistenceServiceImpl] There's a problem persisting new health status, Threadgrenzwert, into the database
2017-11-07 07:52:11,404 Caesium-1-2 ERROR ServiceRunner [c.a.t.h.persistence.service.HealthStatusPersistenceServiceImpl] Stacktrace for failure:
com.atlassian.activeobjects.internal.ActiveObjectsSqlException: There was a SQL exception thrown by the Active Objects library:
Database:
- name:PostgreSQL
- version:9.5.9
- minor version:5
- major version:9
Driver:
- name:PostgreSQL Native Driver
- version:PostgreSQL 9.4.1212
org.postgresql.util.PSQLException: ERROR: value too long for type character varying(255)
at com.atlassian.activeobjects.internal.EntityManagedActiveObjects.create(EntityManagedActiveObjects.java:94)
at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects.create(TenantAwareActiveObjects.java:266)
... 2 filtered
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:56)
at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:60)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:70)
at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLI