diff --git a/azkaban/rtdmp/rtdmp_fetch_v2.sh b/azkaban/rtdmp/rtdmp_fetch_v2.sh
index bbeca2d..b2f7863 100644
--- a/azkaban/rtdmp/rtdmp_fetch_v2.sh
+++ b/azkaban/rtdmp/rtdmp_fetch_v2.sh
@@ -11,7 +11,7 @@ if [[ ! -d "/home/hadoop/wangjf/RTDmp/data" ]]; then
   mkdir -p /home/hadoop/wangjf/RTDmp/data
 fi
 
-java -Xmx4096m -cp ../${JAR} mobvista.dmp.datasource.rtdmp.RTDmpFetch "${start_time}" "${end_time}"
+java -Xmx6144m -cp ../${JAR} mobvista.dmp.datasource.rtdmp.RTDmpFetch "${start_time}" "${end_time}"
 
 if [[ $? -ne 0 ]]; then
     exit 255