diff --git a/example/mini-distributed-example.yaml b/example/mini-distributed-example.yaml
index 775cc2b9c58ad8d7da0da517c6ba9e9e90955490..d60ec0acc380f0fce0d354697ff3ecfcba98ac49 100644
--- a/example/mini-distributed-example.yaml
+++ b/example/mini-distributed-example.yaml
@@ -21,8 +21,8 @@ oceanbase-ce:
     devname: eth0
     cluster_id: 1
     # please set memory limit to a suitable value which is matching resource. 
-    memory_limit: 8G # The maximum running memory for an observer
-    system_memory: 4G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
+    memory_limit: 6G # The maximum running memory for an observer
+    system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
     stack_size: 512K
     cpu_count: 16
     cache_wash_threshold: 1G
diff --git a/example/mini-distributed-with-obproxy-example.yaml b/example/mini-distributed-with-obproxy-example.yaml
index 7e65294c738e0fde8bc3935b915d928c4316a2e4..349c69f513a6a1eeeeb7564f73f7ed1573ef0a15 100644
--- a/example/mini-distributed-with-obproxy-example.yaml
+++ b/example/mini-distributed-with-obproxy-example.yaml
@@ -21,8 +21,8 @@ oceanbase-ce:
     devname: eth0
     cluster_id: 1
     # please set memory limit to a suitable value which is matching resource. 
-    memory_limit: 8G # The maximum running memory for an observer
-    system_memory: 4G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
+    memory_limit: 6G # The maximum running memory for an observer
+    system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
     stack_size: 512K
     cpu_count: 16
     cache_wash_threshold: 1G
diff --git a/example/mini-local-example.yaml b/example/mini-local-example.yaml
index f94027e15a3dd024df431c5c94c9160e135cc875..a7b0d4edd944168686569d47ce243b173b00ba5d 100755
--- a/example/mini-local-example.yaml
+++ b/example/mini-local-example.yaml
@@ -18,8 +18,8 @@ oceanbase-ce:
     zone: zone1
     cluster_id: 1
     # please set memory limit to a suitable value which is matching resource. 
-    memory_limit: 8G # The maximum running memory for an observer
-    system_memory: 4G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
+    memory_limit: 6G # The maximum running memory for an observer
+    system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
     stack_size: 512K
     cpu_count: 16
     cache_wash_threshold: 1G
diff --git a/example/mini-single-example.yaml b/example/mini-single-example.yaml
index 496f7f911aa92af875d0273377a5b0b0b7cd4362..73a750f0ed6932d22ac9c870d5ae6bd129aea881 100755
--- a/example/mini-single-example.yaml
+++ b/example/mini-single-example.yaml
@@ -25,8 +25,8 @@ oceanbase-ce:
     zone: zone1
     cluster_id: 1
     # please set memory limit to a suitable value which is matching resource. 
-    memory_limit: 8G # The maximum running memory for an observer
-    system_memory: 4G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
+    memory_limit: 6G # The maximum running memory for an observer
+    system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
     stack_size: 512K
     cpu_count: 16
     cache_wash_threshold: 1G
diff --git a/example/mini-single-with-obproxy-example.yaml b/example/mini-single-with-obproxy-example.yaml
index 1a7cd72eaf7b2501992c47ba0caf23f0d7a7912e..2138221ffebd30662edc3d8ae278775fdf70f0e9 100644
--- a/example/mini-single-with-obproxy-example.yaml
+++ b/example/mini-single-with-obproxy-example.yaml
@@ -25,8 +25,8 @@ oceanbase-ce:
     zone: zone1
     cluster_id: 1
     # please set memory limit to a suitable value which is matching resource. 
-    memory_limit: 8G # The maximum running memory for an observer
-    system_memory: 4G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
+    memory_limit: 6G # The maximum running memory for an observer
+    system_memory: 3G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
     stack_size: 512K
     cpu_count: 16
     cache_wash_threshold: 1G