diff --git a/packages/mongo/src/client/client.ts b/packages/mongo/src/client/client.ts
index 16dd1fa85..c6d50a85e 100644
--- a/packages/mongo/src/client/client.ts
+++ b/packages/mongo/src/client/client.ts
@@ -73,7 +73,7 @@ export class MongoClient {
 
     public async execute<T extends Command>(command: T): Promise<ReturnType<T['execute']>> {
         const maxRetries = 10;
-        const request = { readonly: !command.needsWritableHost() };
+        const request = { readonly: !command.needsWritableHost?.() };
 
         for (let i = 1; i <= maxRetries; i++) {
             const connection = await this.connectionPool.getConnection(request);
diff --git a/packages/orm-integration/src/various.ts b/packages/orm-integration/src/various.ts
index eb0b564a2..16808daf4 100644
--- a/packages/orm-integration/src/various.ts
+++ b/packages/orm-integration/src/various.ts
@@ -1,5 +1,17 @@
 import { expect } from '@jest/globals';
-import { AutoIncrement, BackReference, cast, entity, isReferenceInstance, PrimaryKey, Reference, Unique, uuid, UUID } from '@deepkit/type';
+import {
+    AutoIncrement,
+    BackReference,
+    cast,
+    DatabaseField,
+    entity,
+    isReferenceInstance,
+    PrimaryKey,
+    Reference,
+    Unique,
+    uuid,
+    UUID,
+} from '@deepkit/type';
 import { identifier, sql, SQLDatabaseAdapter } from '@deepkit/sql';
 import { DatabaseFactory } from './test.js';
 import { hydrateEntity, isDatabaseOf, UniqueConstraintFailure } from '@deepkit/orm';
@@ -8,6 +20,26 @@ import { randomBytes } from 'crypto';
 Error.stackTraceLimit = 20;
 
 export const variousTests = {
+    async testSkipDatabaseFieldForInserts(databaseFactory: DatabaseFactory) {
+        @entity.name('test_skip_database_field_insert')
+        class User {
+            id: number & PrimaryKey & AutoIncrement = 0;
+            username?: string & DatabaseField<{ skip: true }>
+        }
+
+        const database = await databaseFactory([User]);
+
+        const user = cast<User>({ username: 'peter' });
+
+        await database.persist(user);
+
+        {
+            const result = await database.raw<User>(sql`SELECT * FROM ${User}`).findOne();
+            expect(result).toEqual({
+                id: 1,
+            });
+        }
+    },
     async testRawQuery(databaseFactory: DatabaseFactory) {
         @entity.name('test_connection_user')
         class user {