diff --git a/test/jdk/ProblemList.txt b/test/jdk/ProblemList.txt
index 362a58e750e..35953bcfffc 100644
--- a/test/jdk/ProblemList.txt
+++ b/test/jdk/ProblemList.txt
@@ -883,7 +883,6 @@ com/sun/jdi/InvokeHangTest.java                                 8218463 linux-al
 # jdk_util
 
 java/util/ServiceLoader/ReloadTest.java                     8242935 generic-all
-java/util/StringJoiner/StringJoinerTest.java                8246697 generic-all
 
 ############################################################################
 
diff --git a/test/jdk/java/util/StringJoiner/MergeTest.java b/test/jdk/java/util/StringJoiner/MergeTest.java
index 40875eec76d..181a25d4447 100644
--- a/test/jdk/java/util/StringJoiner/MergeTest.java
+++ b/test/jdk/java/util/StringJoiner/MergeTest.java
@@ -26,7 +26,8 @@
  * @bug 8017231 8020977 8054221
  * @summary test  StringJoiner::merge
  * @modules java.base/jdk.internal.util
- * @run testng MergeTest
+ * @requires os.maxMemory > 4G
+ * @run testng/othervm -Xmx4g MergeTest
  */
 
 import java.util.StringJoiner;
diff --git a/test/jdk/java/util/StringJoiner/StringJoinerTest.java b/test/jdk/java/util/StringJoiner/StringJoinerTest.java
index 833108e1316..cbc057ad3d1 100644
--- a/test/jdk/java/util/StringJoiner/StringJoinerTest.java
+++ b/test/jdk/java/util/StringJoiner/StringJoinerTest.java
@@ -25,7 +25,8 @@
  * @bug 5015163 7172553
  * @summary tests StringJoinerTest
  * @modules java.base/jdk.internal.util
- * @run testng StringJoinerTest
+ * @requires os.maxMemory > 4G
+ * @run testng/othervm -Xmx4g StringJoinerTest
  * @author Jim Gish
  */
 import java.util.ArrayList;