diff --git a/hibernate-core/src/main/java/org/hibernate/internal/FastSessionServices.java b/hibernate-core/src/main/java/org/hibernate/internal/FastSessionServices.java
index e1688c3293..0557705813 100644
--- a/hibernate-core/src/main/java/org/hibernate/internal/FastSessionServices.java
+++ b/hibernate-core/src/main/java/org/hibernate/internal/FastSessionServices.java
@@ -125,7 +125,7 @@ final class FastSessionServices {
 	private final Dialect dialect;
 	private final CacheStoreMode defaultCacheStoreMode;
 	private final CacheRetrieveMode defaultCacheRetrieveMode;
-	private List<ConnectionObserver> defaultJdbcObservers;
+	private final ConnectionObserverStatsBridge defaultJdbcObservers;
 
 	FastSessionServices(SessionFactoryImpl sf) {
 		Objects.requireNonNull( sf );
@@ -174,7 +174,7 @@ final class FastSessionServices {
 		this.defaultCacheRetrieveMode = determineCacheRetrieveMode( defaultSessionProperties );
 		this.initialSessionCacheMode = CacheModeHelper.interpretCacheMode( defaultCacheStoreMode, defaultCacheRetrieveMode );
 		this.discardOnClose = sessionFactoryOptions.isReleaseResourcesOnCloseEnabled();
-		this.defaultJdbcObservers = Collections.singletonList( new ConnectionObserverStatsBridge( sf ) );
+		this.defaultJdbcObservers = new ConnectionObserverStatsBridge( sf );
 		this.defaultSessionEventListeners = sessionFactoryOptions.getBaselineSessionEventsListenerBuilder();
 		this.defaultLockOptions = initializeDefaultLockOptions( defaultSessionProperties );
 	}
@@ -273,7 +273,7 @@ final class FastSessionServices {
 		return ( CacheStoreMode ) settings.get( JPA_SHARED_CACHE_STORE_MODE );
 	}
 
-	public Iterable<ConnectionObserver> getDefaultJdbcObservers() {
+	public ConnectionObserverStatsBridge getDefaultJdbcObserver() {
 		return defaultJdbcObservers;
 	}
 
diff --git a/hibernate-core/src/main/java/org/hibernate/internal/JdbcObserverImpl.java b/hibernate-core/src/main/java/org/hibernate/internal/JdbcObserverImpl.java
index be3cf12978..01f2eb71b4 100644
--- a/hibernate-core/src/main/java/org/hibernate/internal/JdbcObserverImpl.java
+++ b/hibernate-core/src/main/java/org/hibernate/internal/JdbcObserverImpl.java
@@ -8,7 +8,6 @@ package org.hibernate.internal;
 
 import java.sql.Connection;
 
-import org.hibernate.engine.jdbc.spi.ConnectionObserver;
 import org.hibernate.engine.spi.SharedSessionContractImplementor;
 import org.hibernate.resource.jdbc.spi.JdbcObserver;
 
@@ -18,11 +17,11 @@ import org.hibernate.resource.jdbc.spi.JdbcObserver;
 public class JdbcObserverImpl implements JdbcObserver {
 
 	private final SharedSessionContractImplementor session;
-	private final Iterable<ConnectionObserver> observers;
+	private final ConnectionObserverStatsBridge observer;
 
 	public JdbcObserverImpl(SharedSessionContractImplementor session, FastSessionServices fastSessionServices) {
 		this.session = session;
-		this.observers = fastSessionServices.getDefaultJdbcObservers();
+		this.observer = fastSessionServices.getDefaultJdbcObserver();
 	}
 
 	@Override
@@ -32,9 +31,7 @@ public class JdbcObserverImpl implements JdbcObserver {
 
 	@Override
 	public void jdbcConnectionAcquisitionEnd(Connection connection) {
-		for ( ConnectionObserver observer : observers ) {
-			observer.physicalConnectionObtained( connection );
-		}
+		observer.physicalConnectionObtained( connection );
 	}
 
 	@Override
@@ -44,9 +41,7 @@ public class JdbcObserverImpl implements JdbcObserver {
 
 	@Override
 	public void jdbcConnectionReleaseEnd() {
-		for ( ConnectionObserver observer : observers ) {
-			observer.physicalConnectionReleased();
-		}
+		observer.physicalConnectionReleased();
 	}
 
 	@Override
@@ -56,9 +51,7 @@ public class JdbcObserverImpl implements JdbcObserver {
 
 	@Override
 	public void jdbcPrepareStatementEnd() {
-		for ( ConnectionObserver observer : observers ) {
-			observer.statementPrepared();
-		}
+		observer.statementPrepared();
 		session.getEventListenerManager().jdbcPrepareStatementEnd();
 	}
 
diff --git a/hibernate-core/src/main/java/org/hibernate/resource/jdbc/spi/JdbcObserver.java b/hibernate-core/src/main/java/org/hibernate/resource/jdbc/spi/JdbcObserver.java
index 49aa95db79..124d28921d 100644
--- a/hibernate-core/src/main/java/org/hibernate/resource/jdbc/spi/JdbcObserver.java
+++ b/hibernate-core/src/main/java/org/hibernate/resource/jdbc/spi/JdbcObserver.java
@@ -9,8 +9,11 @@ package org.hibernate.resource.jdbc.spi;
 import java.sql.Connection;
 
 /**
+ * @deprecated It is no longer possible to plug custom implementations of
+ * this SPI. It will be removed.
  * @author Steve Ebersole
  */
+@Deprecated
 public interface JdbcObserver {
 	public void jdbcConnectionAcquisitionStart();
 	public void jdbcConnectionAcquisitionEnd(Connection connection);