diff --git a/.liquibase/Data_alias/basic/2021.0.0/MissingIndizes/add_MissingIndizes.xml b/.liquibase/Data_alias/basic/2021.0.0/MissingIndizes/add_MissingIndizes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..b86da6372b514d898bc54f5883b43fc579d7a057
--- /dev/null
+++ b/.liquibase/Data_alias/basic/2021.0.0/MissingIndizes/add_MissingIndizes.xml
@@ -0,0 +1,37 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.6.xsd">
+  <changeSet author="b.ulrich" id="50062c3c-f2db-4be1-854f-fc44110fd160">
+    <createIndex tableName="VISITRECOMMENDATION" indexName="IDX_VISITRECOMMEND_CONPERS_ID">
+        <column name="CONTACT_PERSON_ID"/>
+    </createIndex>
+    <createIndex tableName="DISTRICTCONTACT" indexName="IDX_DISTRTCON_ADVCONTACTID_ID">
+        <column name="ADVISER_CONTACT_ID"/>
+    </createIndex>
+    <createIndex tableName="DISTRICTCONTACT" indexName="IDX_DISTRTCON_DISTRICT_ID">
+        <column name="DISTRICT_ID"/>
+    </createIndex>
+    <createIndex tableName="DISTRICTCONTACT" indexName="IDX_DISTRTCON_CONTACT_ID">
+        <column name="CONTACT_ID"/>
+    </createIndex>
+    <createIndex tableName="KNOWLEDGELINK" indexName="IDX_KNOWLEDELINK_ROW_ID">
+        <column name="ROW_ID"/>
+    </createIndex>
+    <createIndex tableName="KNOWLEDGEMANAGEMENT" indexName="IDX_KNOWLEDEMNGMT_AUTHCON_ID">
+        <column name="AUTHOR_CONTACT_ID"/>
+    </createIndex>
+    <createIndex tableName="KNOWLEDGEMANAGEMENT" indexName="IDX_KNOWLEDEMNGMT_RESCON_ID">
+        <column name="RESPONSIBLE_CONTACT_ID"/>
+    </createIndex>
+    <createIndex tableName="KNOWLEDGEMANAGEMENTTAGMODERATION" indexName="IDX_KNOWLEDEMNGMTMOD_ATTR_ID">
+        <column name="AB_ATTRIBUTE_ID"/>
+    </createIndex>
+    <createIndex tableName="OBSERVATION" indexName="IDX_OBSERVATION_OBSERVATION_ID">
+        <column name="OBSERVATION_ID"/>
+    </createIndex>
+    <createIndex tableName="OBSERVATION" indexName="IDX_OBSERVATION_OBJECT_ID">
+        <column name="OBJECT_ID"/>
+    </createIndex>
+  </changeSet>
+</databaseChangeLog>
\ No newline at end of file
diff --git a/.liquibase/Data_alias/basic/2021.0.0/changelog.xml b/.liquibase/Data_alias/basic/2021.0.0/changelog.xml
index 880c8dd5ca400d68c8a32b58afbea516abe7396c..bb65bbdd8ffdd26da4b0f62350966bb81c532952 100644
--- a/.liquibase/Data_alias/basic/2021.0.0/changelog.xml
+++ b/.liquibase/Data_alias/basic/2021.0.0/changelog.xml
@@ -8,4 +8,5 @@
     <include relativeToChangelogFile="true" file="Address/addLatLonIndizes.xml"/>
     <include relativeToChangelogFile="true" file="District/changelog.xml"/>
     <include relativeToChangelogFile="true" file="alter_Order_info.xml"/>
+    <include relativeToChangelogFile="true" file="MissingIndizes/add_missingIndizes.xml"/>
 </databaseChangeLog>
\ No newline at end of file
diff --git a/aliasDefinition/Data_alias/Data_alias.aod b/aliasDefinition/Data_alias/Data_alias.aod
index 7458084c096a49c85115bbb5a997b2ea5d02af52..128bba355293614b9fb7db5ce6b9a2cb91b16d5a 100644
--- a/aliasDefinition/Data_alias/Data_alias.aod
+++ b/aliasDefinition/Data_alias/Data_alias.aod
@@ -14975,7 +14975,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -16119,7 +16119,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -16147,7 +16147,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title>District</title>
                 <description></description>
@@ -16173,7 +16173,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -16561,7 +16561,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -16623,7 +16623,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -16756,7 +16756,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -17005,7 +17005,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <title></title>
                 <description></description>
@@ -17507,7 +17507,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <description></description>
               </entityFieldDb>
@@ -17546,7 +17546,7 @@
                 <scale v="0" />
                 <notNull v="false" />
                 <isUnique v="false" />
-                <index v="false" />
+                <index v="true" />
                 <documentation></documentation>
                 <description></description>
               </entityFieldDb>