diff --git a/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleEnvironmentTests.java b/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleEnvironmentTests.java
index 6e5b7b974a..4b9f37fca7 100644
--- a/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleEnvironmentTests.java
+++ b/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleEnvironmentTests.java
@@ -34,7 +34,8 @@ class OracleEnvironmentTests {
 
 	@Test
 	void getUsernameWhenHasAppUser() {
-		OracleEnvironment environment = new OracleEnvironment(Map.of("APP_USER", "alice", "APP_USER_PASSWORD", "secret"));
+		OracleEnvironment environment = new OracleEnvironment(
+				Map.of("APP_USER", "alice", "APP_USER_PASSWORD", "secret"));
 		assertThat(environment.getUsername()).isEqualTo("alice");
 	}
 
@@ -46,7 +47,8 @@ class OracleEnvironmentTests {
 
 	@Test
 	void getPasswordWhenHasAppPassword() {
-		OracleEnvironment environment = new OracleEnvironment(Map.of("APP_USER", "alice", "APP_USER_PASSWORD", "secret"));
+		OracleEnvironment environment = new OracleEnvironment(
+				Map.of("APP_USER", "alice", "APP_USER_PASSWORD", "secret"));
 		assertThat(environment.getPassword()).isEqualTo("secret");
 	}
 
diff --git a/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests.java b/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests.java
index b5dbe658b7..0d3c71cdc5 100644
--- a/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests.java
+++ b/spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/oracle/OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests.java
@@ -20,7 +20,6 @@ import java.sql.Driver;
 import java.time.Duration;
 
 import org.awaitility.Awaitility;
-import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.OS;
 
@@ -42,59 +41,30 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @DisabledOnOs(os = { OS.LINUX, OS.MAC }, architecture = "aarch64",
 		disabledReason = "The Oracle image has no ARM support")
-class OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests {
+class OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests extends AbstractDockerComposeIntegrationTests {
 
-	@Nested
-	class OracleJdbcDockerComposeConnectionDetailsFactoryDefaultSettingsIntegrationTests extends AbstractDockerComposeIntegrationTests {
-		OracleJdbcDockerComposeConnectionDetailsFactoryDefaultSettingsIntegrationTests() {
-			super("oracle-compose.yaml", DockerImageNames.oracleXe());
-		}
-
-		@Test
-		@SuppressWarnings("unchecked")
-		void runCreatesConnectionDetailsThatCanBeUsedToAccessDatabase() throws Exception {
-			JdbcConnectionDetails connectionDetails = run(JdbcConnectionDetails.class);
-			assertThat(connectionDetails.getUsername()).isEqualTo("system");
-			assertThat(connectionDetails.getPassword()).isEqualTo("secret");
-			assertThat(connectionDetails.getJdbcUrl()).startsWith("jdbc:oracle:thin:@").endsWith("/xepdb1");
-			SimpleDriverDataSource dataSource = new SimpleDriverDataSource();
-			dataSource.setUrl(connectionDetails.getJdbcUrl());
-			dataSource.setUsername(connectionDetails.getUsername());
-			dataSource.setPassword(connectionDetails.getPassword());
-			dataSource.setDriverClass((Class<? extends Driver>) ClassUtils.forName(connectionDetails.getDriverClassName(),
-					getClass().getClassLoader()));
-			Awaitility.await().atMost(Duration.ofMinutes(1)).ignoreExceptions().untilAsserted(() -> {
-				JdbcTemplate template = new JdbcTemplate(dataSource);
-				assertThat(template.queryForObject(DatabaseDriver.ORACLE.getValidationQuery(), String.class))
-						.isEqualTo("Hello");
-			});
-		}
+	OracleJdbcDockerComposeConnectionDetailsFactoryIntegrationTests() {
+		super("oracle-compose.yaml", DockerImageNames.oracleXe());
 	}
 
-	@Nested
-	class OracleJdbcDockerComposeConnectionDetailsFactoryNonDefaultSettingsIntegrationTests extends AbstractDockerComposeIntegrationTests {
-		protected OracleJdbcDockerComposeConnectionDetailsFactoryNonDefaultSettingsIntegrationTests() {
-			super("oracle-non-default-compose.yaml", DockerImageNames.oracleXe());
-		}
-
-		@Test
-		@SuppressWarnings("unchecked")
-		void runCreatesConnectionDetailsWithNonDefaultUsernameAndPasswordThatCanBeUsedToAccessDatabase() throws Exception {
-			JdbcConnectionDetails connectionDetails = run(JdbcConnectionDetails.class);
-			assertThat(connectionDetails.getUsername()).isEqualTo("app_user");
-			assertThat(connectionDetails.getPassword()).isEqualTo("app_user_secret");
-			assertThat(connectionDetails.getJdbcUrl()).startsWith("jdbc:oracle:thin:@").endsWith("/xepdb1");
-			SimpleDriverDataSource dataSource = new SimpleDriverDataSource();
-			dataSource.setUrl(connectionDetails.getJdbcUrl());
-			dataSource.setUsername(connectionDetails.getUsername());
-			dataSource.setPassword(connectionDetails.getPassword());
-			dataSource.setDriverClass((Class<? extends Driver>) ClassUtils.forName(connectionDetails.getDriverClassName(),
-					getClass().getClassLoader()));
-			Awaitility.await().atMost(Duration.ofMinutes(1)).ignoreExceptions().untilAsserted(() -> {
-				JdbcTemplate template = new JdbcTemplate(dataSource);
-				assertThat(template.queryForObject(DatabaseDriver.ORACLE.getValidationQuery(), String.class))
-						.isEqualTo("Hello");
-			});
-		}
+	@Test
+	@SuppressWarnings("unchecked")
+	void runCreatesConnectionDetailsThatCanBeUsedToAccessDatabase() throws Exception {
+		JdbcConnectionDetails connectionDetails = run(JdbcConnectionDetails.class);
+		assertThat(connectionDetails.getUsername()).isEqualTo("app_user");
+		assertThat(connectionDetails.getPassword()).isEqualTo("app_user_secret");
+		assertThat(connectionDetails.getJdbcUrl()).startsWith("jdbc:oracle:thin:@").endsWith("/xepdb1");
+		SimpleDriverDataSource dataSource = new SimpleDriverDataSource();
+		dataSource.setUrl(connectionDetails.getJdbcUrl());
+		dataSource.setUsername(connectionDetails.getUsername());
+		dataSource.setPassword(connectionDetails.getPassword());
+		dataSource.setDriverClass((Class<? extends Driver>) ClassUtils.forName(connectionDetails.getDriverClassName(),
+				getClass().getClassLoader()));
+		Awaitility.await().atMost(Duration.ofMinutes(1)).ignoreExceptions().untilAsserted(() -> {
+			JdbcTemplate template = new JdbcTemplate(dataSource);
+			assertThat(template.queryForObject(DatabaseDriver.ORACLE.getValidationQuery(), String.class))
+				.isEqualTo("Hello");
+		});
 	}
+
 }
diff --git a/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-compose.yaml b/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-compose.yaml
index fd467f44d4..1cfa3ca87a 100644
--- a/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-compose.yaml
+++ b/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-compose.yaml
@@ -4,6 +4,8 @@ services:
     ports:
       - '1521'
     environment:
+      - 'APP_USER=app_user'
+      - 'APP_USER_PASSWORD=app_user_secret'
       - 'ORACLE_PASSWORD=secret'
     healthcheck:
       test: ["CMD-SHELL", "healthcheck.sh"]
diff --git a/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-non-default-compose.yaml b/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-non-default-compose.yaml
deleted file mode 100644
index 1cfa3ca87a..0000000000
--- a/spring-boot-project/spring-boot-docker-compose/src/test/resources/org/springframework/boot/docker/compose/service/connection/oracle/oracle-non-default-compose.yaml
+++ /dev/null
@@ -1,15 +0,0 @@
-services:
-  database:
-    image: '{imageName}'
-    ports:
-      - '1521'
-    environment:
-      - 'APP_USER=app_user'
-      - 'APP_USER_PASSWORD=app_user_secret'
-      - 'ORACLE_PASSWORD=secret'
-    healthcheck:
-      test: ["CMD-SHELL", "healthcheck.sh"]
-      interval: 10s
-      timeout: 5s
-      retries: 10
-