diff --git a/Install_GeoNetwork.md b/Install_GeoNetwork.md
index 6d32999..bb2bf45 100644
--- a/Install_GeoNetwork.md
+++ b/Install_GeoNetwork.md
@@ -12,4 +12,12 @@ https://next.agrarforschung.at/index.php/s/wAPmRtsY5waLGYb/download?path=%2F&fil
 `sudo systemctl restart jetty9.service`
 
 ## GeoNetwork Configuration
-
+### define DB connection:
+`sudo nano /opt/tomcat/webapps/geonetwork/WEB-INF/config-db/jdbc.properties`
+```
+jdbc.username=#{systemEnvironment['GEONETWORK_DB_USERNAME']?:'gn_app'}
+jdbc.password=#{systemEnvironment['GEONETWORK_DB_PASSWORD']?:'gn_app007'}
+jdbc.database=#{systemEnvironment['GEONETWORK_DB_NAME']?:'gn_db'}
+jdbc.host=#{systemEnvironment['GEONETWORK_DB_HOST']?:'localhost'}
+jdbc.port=#{systemEnvironment['GEONETWORK_DB_PORT']?:'5432'}
+```
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