diff --git a/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2 b/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
index 654d4152b95..6825b0bafec 100644
--- a/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
+++ b/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
@@ -333,7 +333,7 @@ data:
         # Perform the final Bettermarks config data init if client secret and URL has been properly set.
         if [ -n "$BETTERMARKS_CLIENT_SECRET" ] && [ -n "$BETTERMARKS_URL" ]; then
             # Add document to the 'ltitools' collection with Bettermarks tool configuration.
-            mongosh $DATABASE__URL --eval 'db.ltitools.replaceOne(
+            mongosh $DATABASE__URL --eval 'db.getCollection("ltitools").replaceOne(
                 {
                   "name": "bettermarks",
                   "isTemplate": true
@@ -391,7 +391,7 @@ data:
 
             # Add Bettermarks' tools configuration as an external tool
             # (stored in the 'external-tools' collection) that uses OAuth.
-            mongosh $DATABASE__URL --eval 'db.external-tools.replaceOne(
+            mongosh $DATABASE__URL --eval 'db.getCollection("external-tools").replaceOne(
                 {
                   "name": "bettermarks",
                   "config_type": "oauth2"
@@ -428,7 +428,7 @@ data:
     if [ -n "$NEXTCLOUD_CLIENT_SECRET" ] && [ -n "$NEXTCLOUD_SOCIALLOGIN_OIDC_INTERNAL_NAME" ]; then
          echo "Inserting nextcloud to ltitools..."
          # Add document to the 'ltitools' collection
-         mongosh $DATABASE__URL --eval 'db.ltitools.update(
+         mongosh $DATABASE__URL --eval 'db.getCollection("ltitools").update(
              {
                "name": "'$NEXTCLOUD_SOCIALLOGIN_OIDC_INTERNAL_NAME'",
                "isTemplate": true
@@ -488,7 +488,7 @@ data:
          # Add Nextcloud' tools configuration as an external tool
          # (stored in the 'external-tools' collection) that uses OAuth.
          echo "Inserting nextcloud to external-tools..."
-         mongosh $DATABASE__URL --eval 'db.external-tools.update(
+         mongosh $DATABASE__URL --eval 'db.getCollection("external-tools").update(
              {
                "name": "nextcloud",
                "config_type": "oauth2"
diff --git a/src/services/oauth2/hooks/index.js b/src/services/oauth2/hooks/index.js
index c4a0cac7916..35e5653b7d3 100644
--- a/src/services/oauth2/hooks/index.js
+++ b/src/services/oauth2/hooks/index.js
@@ -105,7 +105,7 @@ const setIdToken = (hook) => {
 };
 
 const injectLoginRequest = (hook) =>
-	Hydra(hook.app.settings.services.hydra)
+	Hydra(Configuration.get('HYDRA_URI'))
 		.getLoginRequest(hook.id)
 		.then((loginRequest) => {
 			hook.params.loginRequest = loginRequest;
@@ -113,7 +113,7 @@ const injectLoginRequest = (hook) =>
 		});
 
 const injectConsentRequest = (hook) =>
-	Hydra(hook.app.settings.services.hydra)
+	Hydra(Configuration.get('HYDRA_URI'))
 		.getConsentRequest(hook.id)
 		.then((consentRequest) => {
 			hook.params.consentRequest = consentRequest;
diff --git a/src/services/oauth2/index.js b/src/services/oauth2/index.js
index 4725e73e922..34deb09c83d 100644
--- a/src/services/oauth2/index.js
+++ b/src/services/oauth2/index.js
@@ -1,5 +1,6 @@
 const { static: staticContent } = require('@feathersjs/express');
 const path = require('path');
+const { Configuration } = require('@hpi-schul-cloud/commons');
 
 const hooks = require('./hooks');
 const Hydra = require('./hydra.js');
@@ -13,8 +14,10 @@ const setClientDefaults = (data) => {
 };
 
 module.exports = function oauth2() {
+	const hydraUri = Configuration.get('HYDRA_URI');
+
 	const app = this;
-	const hydraAdmin = Hydra(app.settings.services.hydra);
+	const hydraAdmin = Hydra(hydraUri);
 
 	// hydra.isInstanceAlive()
 	// 	.then(res => { logger.log('info', 'Hydra status is: ' + res.statusText) })
@@ -24,7 +27,7 @@ module.exports = function oauth2() {
 
 	app.use('/oauth2/baseUrl', {
 		find() {
-			return Promise.resolve(app.settings.services.hydra);
+			return Promise.resolve(hydraUri);
 		},
 	});
 
diff --git a/test/services/oauth2/mock.js b/test/services/oauth2/mock.js
index deacdcb7b17..e20e3c61182 100644
--- a/test/services/oauth2/mock.js
+++ b/test/services/oauth2/mock.js
@@ -1,7 +1,7 @@
 const assert = require('assert');
 const chai = require('chai');
 const chaiHttp = require('chai-http');
-
+const { Configuration } = require('@hpi-schul-cloud/commons');
 // proxyserver
 const oauth2Server = require('./oauth2MockServer');
 const oauth2 = require('../../../src/services/oauth2');
@@ -50,6 +50,12 @@ describe('oauth2 service mock', function oauthTest() {
 	let beforeHydraUri;
 	before(async function before() {
 		this.timeout(10000);
+
+		beforeHydraUri = Configuration.get('HYDRA_URI');
+
+		const o2mock = await oauth2Server({});
+		Configuration.set('HYDRA_URI', o2mock.url);
+
 		app = await appPromise();
 
 		baseUrlService = app.service('oauth2/baseUrl');
@@ -58,11 +64,6 @@ describe('oauth2 service mock', function oauthTest() {
 		introspectService = app.service('oauth2/introspect');
 		consentService = app.service('oauth2/auth/sessions/consent');
 
-		beforeHydraUri = app.settings.services.hydra;
-
-		const o2mock = await oauth2Server({});
-		app.settings.services.hydra = o2mock.url;
-
 		app.unuse('oauth2/baseUrl');
 		app.unuse('oauth2/clients');
 		app.unuse('oauth2/loginRequest');
@@ -78,7 +79,7 @@ describe('oauth2 service mock', function oauthTest() {
 
 	after(async () => {
 		// sets uri back to original uri
-		app.settings.services.hydra = beforeHydraUri;
+		Configuration.set('HYDRA_URI', beforeHydraUri);
 		await server.close();
 		await closeNestServices(nestServices);
 	});