diff --git a/jOOQ/src/main/java/org/jooq/impl/DefaultConfiguration.java b/jOOQ/src/main/java/org/jooq/impl/DefaultConfiguration.java
index ef1778d10d..87a5abc01e 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DefaultConfiguration.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DefaultConfiguration.java
@@ -93,6 +93,7 @@ import org.jooq.VisitListenerProvider;
 import org.jooq.conf.Settings;
 import org.jooq.conf.SettingsTools;
 import org.jooq.exception.ConfigurationException;
+import org.jooq.impl.DefaultExecuteContext.ExecuteContextConnectionProvider;
 import org.jooq.impl.ThreadLocalTransactionProvider.ThreadLocalConnectionProvider;
 import org.jooq.migrations.xml.jaxb.MigrationsType;
 
@@ -1309,9 +1310,8 @@ public class DefaultConfiguration extends AbstractConfiguration {
 
             this.connectionProvider = newConnectionProvider;
         }
-        else {
+        else
             this.connectionProvider = new NoConnectionProvider();
-        }
 
         return this;
     }
@@ -1353,7 +1353,9 @@ public class DefaultConfiguration extends AbstractConfiguration {
 
     @Override
     public final Configuration set(TransactionProvider newTransactionProvider) {
-        if (newTransactionProvider != null) {
+        // [#4277] [#13563] We're already in an ExecuteContext, no further
+        //                  transactions are needed.
+        if (newTransactionProvider != null && !(this.connectionProvider instanceof ExecuteContextConnectionProvider)) {
             this.transactionProvider = newTransactionProvider;
 
             if (newTransactionProvider instanceof ThreadLocalTransactionProvider)
diff --git a/jOOQ/src/main/java/org/jooq/impl/DefaultExecuteContext.java b/jOOQ/src/main/java/org/jooq/impl/DefaultExecuteContext.java
index d65708c348..20b1501b15 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DefaultExecuteContext.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DefaultExecuteContext.java
@@ -698,7 +698,7 @@ class DefaultExecuteContext implements ExecuteContext {
         this.serverOutput = output;
     }
 
-    private final class ExecuteContextConnectionProvider implements ConnectionProvider {
+    final class ExecuteContextConnectionProvider implements ConnectionProvider {
 
         @NotNull
         @Override