diff --git a/distribution/bin/startup.sh b/distribution/bin/startup.sh
index a297bdf89..0c0191035 100644
--- a/distribution/bin/startup.sh
+++ b/distribution/bin/startup.sh
@@ -58,12 +58,13 @@ fi
 
 JAVA_MAJOR_VERSION=$($JAVA -version 2>&1 | sed -E -n 's/.* version "([0-9]*).*$/\1/p')
 if [[ "$JAVA_MAJOR_VERSION" -ge "9" ]] ; then
+  JAVA_OPT="${JAVA_OPT} -Xbootclasspath/a:${BASE_DIR}/plugins/cmdb"
   JAVA_OPT="${JAVA_OPT} -Xlog:gc*:file=${BASE_DIR}/logs/nacos_gc.log:time,tags:filecount=10,filesize=102400"
 else
+  JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${BASE_DIR}/plugins/cmdb"
   JAVA_OPT="${JAVA_OPT} -Xloggc:${BASE_DIR}/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M"
 fi
 
-JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${BASE_DIR}/plugins/cmdb"
 JAVA_OPT="${JAVA_OPT} -Dnacos.home=${BASE_DIR}"
 JAVA_OPT="${JAVA_OPT} -jar ${BASE_DIR}/target/nacos-server.jar"
 JAVA_OPT="${JAVA_OPT} ${JAVA_OPT_EXT}"
@@ -87,4 +88,4 @@ else
     echo "$JAVA ${JAVA_OPT}" > ${BASE_DIR}/logs/start.out 2>&1 &
     nohup $JAVA ${JAVA_OPT} >> ${BASE_DIR}/logs/start.out 2>&1 &
     echo "nacos is starting，you can check the ${BASE_DIR}/logs/start.out"
-fi
\ No newline at end of file
+fi