diff --git a/test/plugin/containers/tomcat-container/docker/run.sh b/test/plugin/containers/tomcat-container/docker/run.sh
index bf2ac6400966..c125fa5714d8 100644
--- a/test/plugin/containers/tomcat-container/docker/run.sh
+++ b/test/plugin/containers/tomcat-container/docker/run.sh
@@ -73,6 +73,7 @@ curl -s http://localhost:12800/receiveData > ${SCENARIO_HOME}/data/actualData.ya
 echo "To validate"
 java -jar \
   -Dv2=true \
+  -Xmx256m -Xms256m \
   -DtestDate="`date +%Y-%m-%d-%H-%M`" \
   -DtestCasePath=${SCENARIO_HOME}/data/ \
   ${TOOLS_HOME}/skywalking-validator-tools.jar 1>/dev/null 2>&2
diff --git a/test/plugin/mock-collector/bin/collector-startup.sh b/test/plugin/mock-collector/bin/collector-startup.sh
index b0a6acf709e1..419e345975a1 100644
--- a/test/plugin/mock-collector/bin/collector-startup.sh
+++ b/test/plugin/mock-collector/bin/collector-startup.sh
@@ -29,6 +29,7 @@ do
     CLASSPATH="$i:$CLASSPATH"
 done
 
+JAVA_OPTS="${JAVA_OPTS} -Xmx256m -Xms256m"
 JAVA_OPTS="${JAVA_OPTS} -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005 "
 
 $_RUNJAVA ${JAVA_OPTS}  -classpath $CLASSPATH org.apache.skywalking.plugin.test.mockcollector.Main
diff --git a/test/plugin/run.sh b/test/plugin/run.sh
index 214665b762dc..e7cfbcf93cb7 100644
--- a/test/plugin/run.sh
+++ b/test/plugin/run.sh
@@ -135,14 +135,16 @@ do
 
     mv ./target/${scenario_name}.war ${case_work_base}
 
-    java -Dconfigure.file=${scenario_home}/configuration.yml \
+    java -jar \
+        -Xmx256m -Xms256m \
+        -Dconfigure.file=${scenario_home}/configuration.yml \
         -Dscenario.home=${case_work_base} \
         -Dscenario.name=${scenario_name} \
         -Dscenario.version=${version} \
         -Doutput.dir=${case_work_base} \
         -Dagent.dir=${agent_home} \
         -Ddocker.image.version=${build_id} \
-        -jar ${plugin_autotest_helper} 1>${case_work_logs_dir}/helper.log 2>&2
+        ${plugin_autotest_helper} 1>${case_work_logs_dir}/helper.log 2>&2
 
     [[ $? -ne 0 ]] && exitWithMessage "${testcase_name}, generate script failure!"
 
diff --git a/test/plugin/runner/src/main/resources/container-start-script.template b/test/plugin/runner/src/main/resources/container-start-script.template
index 8ee23c9d5aff..a7537a8f82b1 100644
--- a/test/plugin/runner/src/main/resources/container-start-script.template
+++ b/test/plugin/runner/src/main/resources/container-start-script.template
@@ -16,6 +16,7 @@
 -->
 
 docker run \
+        --memory=1024m \
         --name ${docker_container_name} \
         --env SCENARIO_NAME=${scenario_name} \
         --env SCENARIO_VERSION=${scenario_version}  \