diff --git a/backend/check-knowledge-pkey.js b/backend/check-knowledge-pkey.js
index 84a03f1..5f8536a 100755
--- a/backend/check-knowledge-pkey.js
+++ b/backend/check-knowledge-pkey.js
@@ -86,8 +86,19 @@ async function main() {
         });
         console.log('');
 
+        // Erklärung: Warum knowledge_pkey ungenutzt ist
+        const pkUnused = allIndexes.find(i => i.indexname === 'knowledge_pkey' && (i.idx_scan == null || parseInt(i.idx_scan) === 0));
+        if (pkUnused) {
+            console.log('💡 Warum knowledge_pkey (0 Scans) ungenutzt ist:');
+            console.log('   Alle Zugriffe filtern nach (character_id, product_id), nie nach id.');
+            console.log('   Der PK-Index wird nur für Eindeutigkeit/Referenzen genutzt, nicht für Lookups.');
+            console.log('   idx_knowledge_character_product deckt die tatsächlichen Queries ab.\n');
+        }
+
         // Prüfe ob Queries mit id (Primary Key) gemacht werden
-        const [idUsage] = await sequelize.query(`
+        let idUsage = [];
+        try {
+            const [rows] = await sequelize.query(`
             SELECT 
                 query,
                 calls,
@@ -99,6 +110,10 @@ async function main() {
             ORDER BY calls DESC
             LIMIT 5;
         `);
+            idUsage = rows;
+        } catch (e) {
+            console.log('   ℹ️  pg_stat_statements nicht verfügbar – keine Query-Statistik.\n');
+        }
 
         if (idUsage.length > 0) {
             console.log('🔍 Queries die knowledge.id verwenden:');
diff --git a/backend/create-performance-indexes.js b/backend/create-performance-indexes.js
index 858c52f..a0b230e 100755
--- a/backend/create-performance-indexes.js
+++ b/backend/create-performance-indexes.js
@@ -125,13 +125,25 @@ async function main() {
         console.log(`   Übersprungen: ${skipped}`);
         console.log(`   Fehler: ${errors}\n`);
 
+        // ANALYZE ausführen, damit PostgreSQL die neuen Indizes berücksichtigt
+        const tablesToAnalyze = [
+            'falukant_data.knowledge',
+            'falukant_data.inventory',
+            'falukant_data.stock',
+            'falukant_data.production',
+            'falukant_data.director'
+        ];
         if (created > 0) {
-            console.log('💡 Tipp: Führe ANALYZE aus, damit PostgreSQL die neuen Indizes berücksichtigt:');
-            console.log('   ANALYZE falukant_data.knowledge;');
-            console.log('   ANALYZE falukant_data.inventory;');
-            console.log('   ANALYZE falukant_data.stock;');
-            console.log('   ANALYZE falukant_data.production;');
-            console.log('   ANALYZE falukant_data.director;\n');
+            console.log('📊 Führe ANALYZE auf betroffenen Tabellen aus...\n');
+            for (const table of tablesToAnalyze) {
+                try {
+                    await sequelize.query(`ANALYZE ${table};`);
+                    console.log(`   ✅ ANALYZE ${table};`);
+                } catch (err) {
+                    console.log(`   ⚠️  ${table}: ${err.message}`);
+                }
+            }
+            console.log('');
         }
 
         await sequelize.close();