diff --git a/handler/checker/tasks/observer/cluster/tenant_number.yaml b/handler/checker/tasks/observer/cluster/tenant_number.yaml
new file mode 100644
index 00000000..3c725440
--- /dev/null
+++ b/handler/checker/tasks/observer/cluster/tenant_number.yaml
@@ -0,0 +1,19 @@
+info: "Check the number of tenant"
+task:
+  - version: "[4.0.0.0,*]"
+    steps:
+    - type: sql
+      sql: 'select count(0)/2 from oceanbase.__all_tenant where tenant_id>1000;'
+      result:
+        set_value: tenant_nu
+        verify_type: max
+        verify: 100
+        err_msg: "The number of tenants: #{tenant_nu}.recommended: tenant_nu<50"
+    - type: sql
+      sql: 'select count(0)/2 from oceanbase.__all_tenant where tenant_id>1000;'
+      result:
+        set_value: tenant_nu
+        verify_type: max
+        report_type: warning
+        verify: 50
+        err_msg: "The number of tenants: #{tenant_nu}.recommended: tenant_nu<50"
\ No newline at end of file
diff --git a/handler/checker/tasks/observer/system/core_pattern.yaml b/handler/checker/tasks/observer/system/core_pattern.yaml
new file mode 100644
index 00000000..ba0e3f9a
--- /dev/null
+++ b/handler/checker/tasks/observer/system/core_pattern.yaml
@@ -0,0 +1,11 @@
+info: 'Check  kernel.core_pattern'
+task:
+  - steps:
+      - type: get_system_parameter
+        parameter: kernel.core_pattern
+        result:
+          set_value: core_pattern
+          verify: "[[ $core_pattern == *" "* ]]"
+          err_msg: 'clock_source: #{clock_source}. recommended: tsc. Uneven CPU utilization during pressure testing resulted in low TPS during pressure testing'
+
+