diff --git a/docker-images/dble-image/mgr/bootstrap.cnf b/docker-images/dble-image/mgr/bootstrap.cnf
index 669aa53a73..3521093aaa 100644
--- a/docker-images/dble-image/mgr/bootstrap.cnf
+++ b/docker-images/dble-image/mgr/bootstrap.cnf
@@ -11,7 +11,7 @@
 -Xmx4G
 -Xms1G
 -Xss256k
--XX:MaxDirectMemorySize=1G
+-XX:MaxDirectMemorySize=2G
 -XX:MetaspaceSize=100M
 # GC Log
 -XX:+PrintHeapAtGC
@@ -50,7 +50,7 @@
 #-DwriteToBackendExecutor=4
 
 
--DfakeMySQLVersion=5.7.11
+-DfakeMySQLVersion=5.7.21
 #-DtraceEndPoint=http://10.186.60.96:14268/api/traces
 
 # serverBacklog size,default 2048
diff --git a/docker-images/dble-image/quick-start/bootstrap.cnf b/docker-images/dble-image/quick-start/bootstrap.cnf
index 3845ff1e46..eb594d3d1d 100644
--- a/docker-images/dble-image/quick-start/bootstrap.cnf
+++ b/docker-images/dble-image/quick-start/bootstrap.cnf
@@ -11,7 +11,7 @@
 -Xmx4G
 -Xms1G
 -Xss256k
--XX:MaxDirectMemorySize=1G
+-XX:MaxDirectMemorySize=2G
 -XX:MetaspaceSize=100M
 # GC Log
 -XX:+PrintHeapAtGC
@@ -50,7 +50,7 @@
 #-DwriteToBackendExecutor=4
 
 
--DfakeMySQLVersion=5.7.11
+-DfakeMySQLVersion=5.7.21
 #-DtraceEndPoint=http://10.186.60.96:14268/api/traces
 
 # serverBacklog size,default 2048
diff --git a/docker-images/dble-image/rwSplit/bootstrap.cnf b/docker-images/dble-image/rwSplit/bootstrap.cnf
index 901dee277c..f7c51ca1f6 100644
--- a/docker-images/dble-image/rwSplit/bootstrap.cnf
+++ b/docker-images/dble-image/rwSplit/bootstrap.cnf
@@ -11,7 +11,7 @@
 -Xmx4G
 -Xms1G
 -Xss256k
--XX:MaxDirectMemorySize=1G
+-XX:MaxDirectMemorySize=2G
 -XX:MetaspaceSize=100M
 # GC Log
 -XX:+PrintHeapAtGC
@@ -50,7 +50,7 @@
 #-DwriteToBackendExecutor=4
 
 
--DfakeMySQLVersion=5.7.11
+-DfakeMySQLVersion=5.7.21
 #-DtraceEndPoint=http://10.186.60.96:14268/api/traces
 
 # serverBacklog size,default 2048
diff --git a/src/main/resources/bootstrap_template.cnf b/src/main/resources/bootstrap_template.cnf
index 3346d1c77c..593b3b70ff 100644
--- a/src/main/resources/bootstrap_template.cnf
+++ b/src/main/resources/bootstrap_template.cnf
@@ -51,7 +51,7 @@
 #-DwriteToBackendWorker=4
 
 
--DfakeMySQLVersion=5.7.11
+-DfakeMySQLVersion=5.7.21
 
 # serverBacklog size,default 2048
 -DserverBacklog=2048