diff --git a/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java b/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
index f36e217b7b..489ed5ca0a 100644
--- a/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
+++ b/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
@@ -150,6 +150,7 @@ public class GenerationTool {
     }
 
     public static void main(String[] args) throws Exception {
+        JooqLogger.initSimpleFormatter();
         String[] files;
 
         if (args.length > 0) {
diff --git a/jOOQ/src/main/java/org/jooq/CLIUtil.java b/jOOQ/src/main/java/org/jooq/CLIUtil.java
index 0ac891b97b..7647103145 100644
--- a/jOOQ/src/main/java/org/jooq/CLIUtil.java
+++ b/jOOQ/src/main/java/org/jooq/CLIUtil.java
@@ -39,6 +39,8 @@ package org.jooq;
 
 import static org.jooq.Constants.MINOR_VERSION;
 
+import org.jooq.tools.JooqLogger;
+
 /**
  * Common utilities for {@link ParserCLI}, {@link DiffCLI} and others.
  *
@@ -47,6 +49,8 @@ import static org.jooq.Constants.MINOR_VERSION;
 final class CLIUtil {
 
     static void main(String url, Runnable runnable) {
+        JooqLogger.initSimpleFormatter();
+
         try {
             runnable.run();
         }
diff --git a/jOOQ/src/main/java/org/jooq/tools/JooqLogger.java b/jOOQ/src/main/java/org/jooq/tools/JooqLogger.java
index a493877e93..3bef5a642f 100644
--- a/jOOQ/src/main/java/org/jooq/tools/JooqLogger.java
+++ b/jOOQ/src/main/java/org/jooq/tools/JooqLogger.java
@@ -37,6 +37,8 @@
  */
 package org.jooq.tools;
 
+import java.util.logging.SimpleFormatter;
+
 import org.jooq.Log;
 
 /**
@@ -596,4 +598,13 @@ public final class JooqLogger implements Log {
             return ordinal() <= level.ordinal();
         }
     }
+
+    /**
+     * [#12405] The common {@link SimpleFormatter} format to be set in all of
+     * jOOQ's CLIs.
+     */
+    public static void initSimpleFormatter() {
+        if (System.getProperty("java.util.logging.SimpleFormatter.format") == null)
+            System.setProperty("java.util.logging.SimpleFormatter.format", "%1$tH:%1$tM:%1$tS %4$s %5$s%6$s%n");
+    }
 }
diff --git a/jOOQ/src/main/java/org/jooq/util/jaxb/tools/MiniJAXB.java b/jOOQ/src/main/java/org/jooq/util/jaxb/tools/MiniJAXB.java
index 80f7a7f9fe..44a1d6d977 100644
--- a/jOOQ/src/main/java/org/jooq/util/jaxb/tools/MiniJAXB.java
+++ b/jOOQ/src/main/java/org/jooq/util/jaxb/tools/MiniJAXB.java
@@ -57,7 +57,6 @@ import java.lang.reflect.ParameterizedType;
 import java.net.URL;
 import java.nio.charset.Charset;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.IdentityHashMap;