diff --git a/Makefile b/Makefile
index 4462e0d1..c8f2dcb5 100644
--- a/Makefile
+++ b/Makefile
@@ -236,6 +236,8 @@ LINUX_DEPS_CLEAN += apt-rpm/$(PACKAGE_NAME).spec
 LINUX_DEPS += rpm/bin/documentserver-configure.sh
 LINUX_DEPS += apt-rpm/bin/documentserver-configure.sh
 
+LINUX_DEPS += rpm/bin/documentserver-upgrade-db.sh
+
 LINUX_DEPS_CLEAN += rpm/bin/*.sh
 LINUX_DEPS_CLEAN += apt-rpm/bin/*.sh
 
diff --git a/deb/debian/postinst.m4 b/deb/debian/postinst.m4
index e896e2a7..866e4f63 100644
--- a/deb/debian/postinst.m4
+++ b/deb/debian/postinst.m4
@@ -121,12 +121,20 @@ install_postges() {
 				{ echo "ERROR: can't connect to postgressql database"; exit 1; }
 		fi
 	set -e
-		if [ ! $CLUSTER_MODE = true ]; then
-			$PSQL -f "$DIR/server/schema/postgresql/removetbl.sql" \
+		if [ ! "${IS_UPGARDE}" = "true" ]; then
+			#installation
+			if [ ! $CLUSTER_MODE = true ]; then
+				$PSQL -f "$DIR/server/schema/postgresql/removetbl.sql" \
+					>/dev/null 2>&1
+			fi
+			$PSQL -f "$DIR/server/schema/postgresql/createdb.sql" \
 				>/dev/null 2>&1
-		fi
-		$PSQL -f "$DIR/server/schema/postgresql/createdb.sql" \
-			>/dev/null 2>&1
+		else
+			#upgrading
+			for i in $(ls $DIR/server/schema/postgresql/upgrade/upgrade*); do
+				$PSQL -f ${i} >/dev/null 2>&1;
+			done
+  		fi
 }
 
 install_mysql() {
@@ -142,16 +150,24 @@ install_mysql() {
 				{ echo "ERROR: can't connect to mysql database"; exit 1; }
 		fi
 	set -e
-		if ! $MYSQL -e "SHOW DATABASES;" | cut -d\| -f 1 | grep -qw $DB_NAME; then
-			$MYSQL -e \
-				"CREATE DATABASE IF NOT EXISTS $DB_NAME \
-				DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;" \
-				>/dev/null 2>&1
-		fi
-		if [ ! $CLUSTER_MODE = true ]; then
-			$MYSQL $DB_NAME < "$DIR/server/schema/mysql/removetbl.sql" >/dev/null 2>&1
-		fi
-		$MYSQL $DB_NAME < "$DIR/server/schema/mysql/createdb.sql" >/dev/null 2>&1
+		if [ ! "${IS_UPGARDE}" = "true" ]; then
+			#installation
+			if ! $MYSQL -e "SHOW DATABASES;" | cut -d\| -f 1 | grep -qw $DB_NAME; then
+				$MYSQL -e \
+					"CREATE DATABASE IF NOT EXISTS $DB_NAME \
+					DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;" \
+					>/dev/null 2>&1
+			fi
+			if [ ! $CLUSTER_MODE = true ]; then
+				$MYSQL $DB_NAME < "$DIR/server/schema/mysql/removetbl.sql" >/dev/null 2>&1
+			fi
+			$MYSQL $DB_NAME < "$DIR/server/schema/mysql/createdb.sql" >/dev/null 2>&1
+		else
+			#upgrading
+			for i in $(ls $DIR/server/schema/mysql/upgrade/upgrade*); do
+				$MYSQL "$DB_NAME" < ${i} >/dev/null 2>&1;
+			done
+  		fi
 }
 
 save_db_params(){
@@ -260,6 +276,13 @@ setup_nginx(){
 
 }
 
+if test -z "$2"
+then
+	IS_UPGARDE="false"
+else
+	IS_UPGARDE="true"
+fi
+
 case "$1" in
 	configure)
 		adduser --quiet --home "$DIR" --system --group ds
diff --git a/rpm/bin/documentserver-upgrade-db.sh.m4 b/rpm/bin/documentserver-upgrade-db.sh.m4
new file mode 100755
index 00000000..145d7bad
--- /dev/null
+++ b/rpm/bin/documentserver-upgrade-db.sh.m4
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+DIR="/var/www/M4_DS_PREFIX"
+LOCAL_CONFIG="/etc/M4_DS_PREFIX/local.json"
+JSON_BIN="$DIR/npm/json"
+JSON="$JSON_BIN -f $LOCAL_CONFIG"
+
+load_db_params(){
+	DB_HOST=$($JSON services.CoAuthoring.sql.dbHost)
+	DB_NAME=$($JSON services.CoAuthoring.sql.dbName)
+	DB_USER=$($JSON services.CoAuthoring.sql.dbUser)
+	DB_PWD=$($JSON services.CoAuthoring.sql.dbPass)
+	DB_TYPE=$($JSON services.CoAuthoring.sql.type)
+	DB_PORT=$($JSON services.CoAuthoring.sql.dbPort)
+}
+
+execute_postgres_scripts(){
+	echo -n "Updating PostgreSQL database... "
+
+	for i in $(ls $DIR/server/schema/postgresql/upgrade/upgrade*); do
+        $PSQL -d "$DB_NAME" -f ${i} >/dev/null 2>&1;
+	done
+
+	echo "OK"
+}
+
+establish_postgres_conn() {
+	echo -n "Trying to establish PostgreSQL connection... "
+
+	command -v psql >/dev/null 2>&1 || { echo "PostgreSQL client not found"; exit 1; }
+
+        CONNECTION_PARAMS="-h$DB_HOST -U$DB_USER -w"
+        if [ -n "$DB_PWD" ]; then
+                export PGPASSWORD=$DB_PWD
+        fi
+
+        PSQL="psql -q $CONNECTION_PARAMS"
+
+	$PSQL -c ";" >/dev/null 2>&1 || { echo "FAILURE"; exit 1; }
+
+	echo "OK"
+}
+
+execute_mysql_sqript(){
+	echo -n "Updating MYSQL database... "
+
+	for i in $(ls $DIR/server/schema/mysql/upgrade/upgrade*); do
+        $MYSQL "$DB_NAME" < ${i};
+	done
+
+	echo "OK"
+}
+
+establish_mysql_conn(){
+	echo -n "Trying to database MySQL connection... "
+	command -v mysql >/dev/null 2>&1 || { echo "MySQL client not found"; exit 1; }
+	MYSQL="mysql -h$DB_HOST -u$DB_USER"
+	if [ -n "$DB_PWD" ]; then
+		MYSQL="$MYSQL -p$DB_PWD"
+	fi 
+
+	$MYSQL -e ";" >/dev/null 2>&1 || { echo "FAILURE"; exit 1; }
+
+	echo "OK"
+}
+
+execute_db_script(){
+	case $DB_TYPE in
+		postgres)
+			establish_postgres_conn || exit $?
+			execute_postgres_scripts || exit $?
+			;;	
+		mysql) 
+			establish_mysql_conn || exit $?
+			execute_mysql_sqript || exit $?
+			;;   
+		*)
+			echo "Incorrect DB_TYPE value! Possible value of DB_TYPE is 'postgres' or 'mysql'."
+			exit 1	  
+	esac
+}
+
+load_db_params
+execute_db_script
diff --git a/rpm/common.spec b/rpm/common.spec
index e0757357..e02c8d0c 100644
--- a/rpm/common.spec
+++ b/rpm/common.spec
@@ -280,6 +280,16 @@ then
   echo "    # rpm -i https://deac-ams.dl.sourceforge.net/project/mscorefonts2/rpms/msttcore-fonts-installer-2.6-1.noarch.rpm"
 fi
 
+case "$1" in
+  1)
+    # Initial installation
+  ;;
+  2)
+    # Upgrade database
+    documentserver-upgrade-db.sh
+  ;;
+esac
+
 %preun
 case "$1" in
   0)