diff --git a/src/custom_db_backend/base.py b/src/custom_db_backend/base.py
new file mode 100644
index 0000000..4789d25
--- /dev/null
+++ b/src/custom_db_backend/base.py
@@ -0,0 +1,18 @@
+# see https://code.djangoproject.com/ticket/34914#comment:3 
+# implemented solution from: https://forum.djangoproject.com/t/django-db-utils-interfaceerror-connection-already-closed-when-updating-from-django-3-0-to-3-1/12708/21
+
+import django.db
+from django.contrib.gis.db.backends.postgis.base import (
+    DatabaseWrapper as BuiltinPostgresDatabaseWrapper,
+)
+from psycopg2 import InterfaceError
+
+
+class DatabaseWrapper(BuiltinPostgresDatabaseWrapper):
+    def create_cursor(self, name=None):
+        try:
+            return super().create_cursor(name=name)
+        except InterfaceError:
+            django.db.close_old_connections()
+            django.db.connection.connect()
+            return super().create_cursor(name=name)
\ No newline at end of file
diff --git a/src/import_export_job/admin.py b/src/import_export_job/admin.py
index 7db1181..0f04280 100755
--- a/src/import_export_job/admin.py
+++ b/src/import_export_job/admin.py
@@ -71,13 +71,13 @@ def __new__(cls, *args, **kwargs):
         return AdminFormWithUser
 
     list_display = (
+        "id",
         "model",
         "job_status_info",
         "file_link",
         "errors",
         "change_summary_link",
         "imported",
-        "owner",
         "updated_at",
     )
     readonly_fields = (
@@ -85,7 +85,6 @@ def __new__(cls, *args, **kwargs):
         "change_summary",
         "imported",
         "errors",
-        "owner",
         "updated_at",
         "processing_initiated",
     )
diff --git a/src/import_export_job/tasks.py b/src/import_export_job/tasks.py
index 5fb983b..8ab30a3 100755
--- a/src/import_export_job/tasks.py
+++ b/src/import_export_job/tasks.py
@@ -85,10 +85,16 @@ def update_status(step, message):
 
 def run_import_job(pk, dry_run=True):
     logger.info(f"Importing {pk} dry-run {dry_run}")
-    import_job = models.ImportJob.objects.get(pk=pk)
     try:
+        import_job = models.ImportJob.objects.get(pk=pk)
+    except Exception as e:
+        logger.info(f"error op job {pk}: {e}")
+        return
+
+    try:        
         _run_import_job(import_job, dry_run)
     except Exception as e:
+        logger.info(f"error op job {pk}: {e}")
         import_job.errors += _("Import error %s") % e + "\n"
         change_job_status(import_job, "import", "Import error", dry_run)
         import_job.save()
diff --git a/src/main/settings.py b/src/main/settings.py
index 3be4685..dd41698 100755
--- a/src/main/settings.py
+++ b/src/main/settings.py
@@ -210,7 +210,7 @@ def resource_temporaldimension():
 
 DATABASES = {
     "default": {
-        "ENGINE": "django.contrib.gis.db.backends.postgis",
+        "ENGINE": "custom_db_backend",
         "NAME": DATABASE_NAME,
         "USER": DATABASE_USER,
         "PASSWORD": DATABASE_PASSWORD,
diff --git a/src/statistiek_hub/resources/observation_resource.py b/src/statistiek_hub/resources/observation_resource.py
index 16e2e7f..4e64133 100755
--- a/src/statistiek_hub/resources/observation_resource.py
+++ b/src/statistiek_hub/resources/observation_resource.py
@@ -62,16 +62,10 @@ def clean(self, value, row, **kwargs):
         start_date = convert_to_date(row["temporal_date"])
         end_date = add_timedelta(start_date, temporal_type)
 
-        temporal, created = TemporalDimension.objects.get_or_create(
+        temporal = TemporalDimension.objects.get(
             type=temporal_type,
             startdate=start_date,
-            enddate=end_date,
-            defaults={
-                "name": f"{temporal_type}: {start_date.strftime('%Y-%m-%d')}-->{end_date.strftime('%Y-%m-%d')}",
-                "type": temporal_type,
-                "startdate": start_date,
-                "enddate": end_date,
-            },
+            enddate=end_date
         )
         return temporal