diff --git a/.github/workflows/tests_with_database.yml b/.github/workflows/tests_with_database.yml
new file mode 100644
index 000000000..5fc70d288
--- /dev/null
+++ b/.github/workflows/tests_with_database.yml
@@ -0,0 +1,70 @@
+name: Tests with database
+
+on:
+  push:
+    branches:
+      - main
+  pull_request: {}
+
+jobs:
+  postgresql:
+    name: ${{ matrix.database.name }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        database:
+          - {name: PostgreSQL 9.6,    image: "postgres:9.6"}
+          - {name: PostgreSQL 10,     image: "postgres:10"}
+          - {name: PostgreSQL 11,     image: "postgres:11"}
+          - {name: PostgreSQL 12,     image: "postgres:12"}
+          - {name: PostgreSQL 13,     image: "postgres:13"}
+          - {name: PostgreSQL 14,     image: "postgres:14"}
+          - {name: PostgreSQL 15,     image: "postgres:15"}
+          - {name: PostgreSQL latest, image: "postgres:latest"}
+
+    env:
+      NOTIFICATIONS_TESTS_DB_TYPE: pgsql
+      NOTIFICATIONS_TESTS_DB: notifications
+      NOTIFICATIONS_TESTS_DB_USER: postgres
+      NOTIFICATIONS_TESTS_DB_PASSWORD: notifications
+      NOTIFICATIONS_TESTS_DB_HOST: 127.0.0.1
+      NOTIFICATIONS_TESTS_DB_PORT: 5432
+
+    services:
+      postgres:
+        image: ${{ matrix.database.image }}
+        env:
+          POSTGRES_PASSWORD: ${{ env.NOTIFICATIONS_TESTS_DB_PASSWORD }}
+          POSTGRES_DB: ${{ env.NOTIFICATIONS_TESTS_DB }}
+        # Wait until postgres becomes ready
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - ${{ env.NOTIFICATIONS_TESTS_DB_PORT }}:${{ env.NOTIFICATIONS_TESTS_DB_PORT }}
+
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: stable
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Importing Schema
+        env:
+          PGPASSWORD: ${{ env.NOTIFICATIONS_TESTS_DB_PASSWORD }}
+        run: |
+          psql -U postgres -w -h 127.0.0.1 -d ${{ env.NOTIFICATIONS_TESTS_DB }} < ${{ github.workspace }}/schema/pgsql/schema.sql
+
+      - name: Download dependencies
+        run: go get -v -t -d ./...
+
+      - name: Run tests
+        timeout-minutes: 10
+        run: go test -v -timeout 5m ./...
diff --git a/internal/incident/restore_incidents_test.go b/internal/incident/restore_incidents_test.go
new file mode 100644
index 000000000..f633fd10d
--- /dev/null
+++ b/internal/incident/restore_incidents_test.go
@@ -0,0 +1,223 @@
+package incident
+
+import (
+	"context"
+	"crypto/rand"
+	"fmt"
+	"github.com/creasty/defaults"
+	"github.com/icinga/icinga-notifications/internal/config"
+	"github.com/icinga/icinga-notifications/internal/event"
+	"github.com/icinga/icinga-notifications/internal/object"
+	baseConfig "github.com/icinga/icingadb/pkg/config"
+	"github.com/icinga/icingadb/pkg/icingadb"
+	"github.com/icinga/icingadb/pkg/logging"
+	"github.com/icinga/icingadb/pkg/types"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/zap/zaptest"
+	"os"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestIncidentLoading(t *testing.T) {
+	ctx := context.Background()
+	db := getTestDB(ctx, t)
+
+	// Insert a dummy sources for our test cases!
+	source := config.Source{ID: 1, Type: "notifications", Name: "Icinga Notifications", Icinga2InsecureTLS: types.Bool{Bool: false, Valid: true}}
+	stmt, _ := db.BuildInsertStmt(source)
+	_, err := db.NamedExecContext(ctx, stmt, source)
+	require.NoError(t, err, "populating source table should not fail")
+
+	// Reduce the default placeholders per statement to a meaningful number, so that we can
+	// test some parallelism when loading the incidents.
+	db.Options.MaxPlaceholdersPerStatement = 100
+
+	// Due to the 10*maxPlaceholders constraint, only 10 goroutines are going to process simultaneously.
+	// Therefore, reduce the default maximum number of connections per table to 4 in order to fully simulate
+	// semaphore lock wait cycles for a given table.
+	db.Options.MaxConnectionsPerTable = 4
+
+	testData := make(map[string]*Incident, 10*db.Options.MaxPlaceholdersPerStatement)
+	for j := 1; j <= 10*db.Options.MaxPlaceholdersPerStatement; j++ {
+		i := makeIncident(ctx, db, t, false)
+		testData[i.ObjectID.String()] = i
+	}
+
+	t.Run("WithNoRecoveredIncidents", func(t *testing.T) {
+		assertIncidents(ctx, db, t, testData)
+	})
+
+	t.Run("WithSomeRecoveredIncidents", func(t *testing.T) {
+		tx, err := db.BeginTxx(ctx, nil)
+		require.NoError(t, err, "starting a transaction should not fail")
+
+		// Drop all cached incidents before re-loading them!
+		for _, i := range GetCurrentIncidents() {
+			RemoveCurrent(i.Object)
+
+			// Mark some of the existing incidents as recovered.
+			if i.Id%20 == 0 { // 1000 / 20 => 50 existing incidents will be marked as recovered!
+				i.RecoveredAt = types.UnixMilli(time.Now())
+
+				require.NoError(t, i.Sync(ctx, tx), "failed to update/insert incident")
+
+				// Drop it from our test data as it's recovered
+				delete(testData, i.ObjectID.String())
+			}
+		}
+		require.NoError(t, tx.Commit(), "committing a transaction should not fail")
+
+		assert.Len(t, GetCurrentIncidents(), 0, "there should be no cached incidents")
+
+		for j := 1; j <= db.Options.MaxPlaceholdersPerStatement/2; j++ {
+			// We don't need to cache recovered incidents in memory.
+			_ = makeIncident(ctx, db, t, true)
+
+			if j%2 == 0 {
+				// Add some extra new not recovered incidents to fully simulate a daemon reload.
+				i := makeIncident(ctx, db, t, false)
+				testData[i.ObjectID.String()] = i
+			}
+		}
+
+		assertIncidents(ctx, db, t, testData)
+	})
+}
+
+// assertIncidents restores all not recovered incidents from the database and asserts them based on the given testData.
+//
+// The incident loading process is limited to a maximum duration of 10 seconds and will be
+// aborted and causes the entire test suite to fail immediately, if it takes longer.
+func assertIncidents(ctx context.Context, db *icingadb.DB, t *testing.T, testData map[string]*Incident) {
+	logger := logging.NewLogger(zaptest.NewLogger(t).Sugar(), time.Hour)
+
+	// Since we have been using object.FromEvent() to persist the test objects to the database,
+	// these will be automatically added to the objects cache as well. So clear the cache before
+	// reloading the incidents, otherwise it will panic in object.RestoreObjects().
+	object.ClearCache()
+
+	// The incident loading process may hang due to unknown bugs or semaphore lock waits.
+	// Therefore, give it maximum time of 10s to finish normally, otherwise give up and fail.
+	ctx, cancelFunc := context.WithDeadline(ctx, time.Now().Add(10*time.Second))
+	defer cancelFunc()
+
+	err := LoadOpenIncidents(ctx, db, logger, &config.RuntimeConfig{})
+	require.NoError(t, err, "failed to load not recovered incidents")
+
+	incidents := GetCurrentIncidents()
+	assert.Len(t, incidents, len(testData), "failed to load all active incidents")
+
+	for _, current := range incidents {
+		i := testData[current.ObjectID.String()]
+		assert.NotNilf(t, i, "found mysterious incident that's not part of our test data")
+		assert.NotNil(t, current.Object, "failed to restore incident object")
+
+		if i != nil {
+			assert.Equal(t, i.Id, current.Id, "incidents linked to the same object don't have the same ID")
+			assert.Equal(t, i.Severity, current.Severity, "failed to restore incident severity")
+			assert.Equal(t, i.StartedAt, current.StartedAt, "failed to restore incident started at")
+			assert.Equal(t, i.RecoveredAt, current.RecoveredAt, "failed to restore incident recovered at")
+
+			assert.NotNil(t, current.EscalationState, "incident escalation state map should've initialised")
+			assert.NotNil(t, current.Recipients, "incident recipients map should've initialised")
+			assert.NotNil(t, current.Rules, "incident rules map should've initialised")
+
+			if current.Object != nil {
+				assert.Equal(t, i.Object, current.Object, "failed to fully restore incident")
+			}
+		}
+	}
+}
+
+// makeIncident returns a fully initialised recovered/un-recovered incident.
+//
+// This will firstly create and synchronise a new object from a freshly generated dummy event with distinct
+// tags and name, and ensures that no error is returned, otherwise it will cause the entire test suite to fail.
+// Once the object has been successfully synchronised, an incident is created and synced with the database.
+func makeIncident(ctx context.Context, db *icingadb.DB, t *testing.T, recovered bool) *Incident {
+	ev := &event.Event{
+		Time:     time.Time{},
+		SourceId: 1,
+		Name:     makeRandomString(t),
+		Tags: map[string]string{ // Always generate unique object tags not to produce same object ID!
+			"host":    makeRandomString(t),
+			"service": makeRandomString(t),
+		},
+		ExtraTags: map[string]string{
+			"hostgroup/database-server": "",
+			"servicegroup/webserver":    "",
+		},
+	}
+
+	o, err := object.FromEvent(ctx, db, ev)
+	require.NoError(t, err)
+
+	i := NewIncident(db, o, &config.RuntimeConfig{}, nil)
+	i.StartedAt = types.UnixMilli(time.Unix(time.Now().Add(-2*time.Hour).Unix(), 0))
+	i.Severity = event.SeverityCrit
+	if recovered {
+		i.Severity = event.SeverityOK
+		i.RecoveredAt = types.UnixMilli(time.Now())
+	}
+
+	tx, err := db.BeginTxx(ctx, nil)
+	require.NoError(t, err, "starting a transaction should not fail")
+	require.NoError(t, i.Sync(ctx, tx), "failed to insert incident")
+	require.NoError(t, tx.Commit(), "committing a transaction should not fail")
+
+	return i
+}
+
+func makeRandomString(t *testing.T) string {
+	buf := make([]byte, 20)
+	_, err := rand.Read(buf)
+	require.NoError(t, err, "failed to generate random string")
+
+	return fmt.Sprintf("%x", buf)
+}
+
+// getTestDB retrieves the database config from env variables, opens a new database and returns it.
+//
+// The test suite will be skipped if no environment variable is set, otherwise fails fatally when
+// invalid configurations are specified.
+func getTestDB(ctx context.Context, t *testing.T) *icingadb.DB {
+	c := &baseConfig.Database{}
+	require.NoError(t, defaults.Set(c), "applying config default should not fail")
+
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB_TYPE"); ok {
+		c.Type = strings.ToLower(v)
+	} else {
+		t.Skipf("Environment %q not set, skipping test!", "NOTIFICATIONS_TESTS_DB_TYPE")
+	}
+
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB"); ok {
+		c.Database = v
+	}
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB_USER"); ok {
+		c.User = v
+	}
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB_PASSWORD"); ok {
+		c.Password = v
+	}
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB_HOST"); ok {
+		c.Host = v
+	}
+	if v, ok := os.LookupEnv("NOTIFICATIONS_TESTS_DB_PORT"); ok {
+		port, err := strconv.Atoi(v)
+		require.NoError(t, err, "invalid port provided")
+
+		c.Port = port
+	}
+
+	require.NoError(t, c.Validate(), "database config validation should not fail")
+
+	db, err := c.Open(logging.NewLogger(zaptest.NewLogger(t).Sugar(), time.Hour))
+	require.NoError(t, err, "connecting to database should not fail")
+	require.NoError(t, db.PingContext(ctx), "pinging the database should not fail")
+
+	return db
+}
diff --git a/internal/object/object.go b/internal/object/object.go
index e74ca18de..e7c936a7a 100644
--- a/internal/object/object.go
+++ b/internal/object/object.go
@@ -57,6 +57,15 @@ func GetFromCache(id types.Binary) *Object {
 	return cache[id.String()]
 }
 
+// ClearCache clears the global object cache store.
+// Note, this is only used for unit tests not to run into "can't cache already cached object" error.
+func ClearCache() {
+	cacheMu.Lock()
+	defer cacheMu.Unlock()
+
+	cache = make(map[string]*Object)
+}
+
 // RestoreObjects restores all objects and their (extra)tags matching the given IDs from the database.
 // Returns error on any database failures and panics when trying to cache an object that's already in the cache store.
 func RestoreObjects(ctx context.Context, db *icingadb.DB, ids []types.Binary) error {