diff --git a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/discovery/DbDiscoveryImpl.java b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/discovery/DbDiscoveryImpl.java
index 4b2cd6af910b7e2abea351ecbb8d1295817c9b02..8bfcea009f455cf97ac59d1cf1d0e033e2d2aea1 100644
--- a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/discovery/DbDiscoveryImpl.java
+++ b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/discovery/DbDiscoveryImpl.java
@@ -16,6 +16,7 @@
 
 package io.iec.edp.caf.msu.client.discovery;
 
+import io.iec.edp.caf.commons.runtime.CafEnvironment;
 import io.iec.edp.caf.commons.utils.SpringBeanUtils;
 import io.iec.edp.caf.datasource.CAFDataSourceSelector;
 import io.iec.edp.caf.msu.api.client.ServiceDiscovery;
@@ -91,6 +92,9 @@ public class DbDiscoveryImpl implements ServiceDiscovery {
      */
     @Override
     public List<ServiceUnitInfo> getEnabledServiceUnitInfo() {
+        if (CafEnvironment.enablePrimaryDataService()) {
+            throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+        }
         List<ServiceUnitInfo> infos = null;
 
         try {
@@ -125,6 +129,9 @@ public class DbDiscoveryImpl implements ServiceDiscovery {
      * @return 所有实例
      */
     private List<GspAppServerInstance> findAppsBySu(String su) {
+        if (CafEnvironment.enablePrimaryDataService()) {
+            throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+        }
         List<GspAppServerInstance> apps = new ArrayList<>();
 
         try {
diff --git a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/health/DbHealthCheck.java b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/health/DbHealthCheck.java
index f4a26c586ccadd756bf03c99a89fd4081cb8acca..7a4fbd96842aed0257bc5783fffd359f027a7e90 100644
--- a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/health/DbHealthCheck.java
+++ b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/health/DbHealthCheck.java
@@ -16,6 +16,7 @@
 
 package io.iec.edp.caf.msu.client.health;
 
+import io.iec.edp.caf.commons.runtime.CafEnvironment;
 import io.iec.edp.caf.commons.transaction.JpaTransaction;
 import io.iec.edp.caf.commons.transaction.TransactionPropagation;
 import io.iec.edp.caf.commons.utils.SpringBeanUtils;
@@ -109,6 +110,9 @@ public class DbHealthCheck {
 
         // 健康检测
         private void doCheck() {
+            if (CafEnvironment.enablePrimaryDataService()) {
+                throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+            }
             try {
                 //设置主库
                 CAFDataSourceSelector.selectMaster();
diff --git a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/register/DbRegisterImpl.java b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/register/DbRegisterImpl.java
index 86a843bf12b0f384122ae28bc8e62d634dffdb55..238c789fd797c6c47f6fb6b717d276d6905106e7 100644
--- a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/register/DbRegisterImpl.java
+++ b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/client/register/DbRegisterImpl.java
@@ -99,6 +99,9 @@ public class DbRegisterImpl implements ServiceRegistry {
 
     @Override
     public Boolean register(ServiceUnitRegisterInfo registerInfo, String ip, Integer port) {
+        if (CafEnvironment.enablePrimaryDataService()) {
+            throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+        }
         try {
             //设置主库
             CAFDataSourceSelector.selectMaster();
diff --git a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/common/DBMsuServiceImpl.java b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/common/DBMsuServiceImpl.java
index 940c5e4a5cd9662270f0446964cb6f37ff8b8924..59dd3c29fb6b274db3b04365f546017f0f0759b3 100644
--- a/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/common/DBMsuServiceImpl.java
+++ b/caf-msu/caf-msu-database/src/main/java/io/iec/edp/caf/msu/common/DBMsuServiceImpl.java
@@ -1,5 +1,6 @@
 package io.iec.edp.caf.msu.common;
 
+import io.iec.edp.caf.commons.runtime.CafEnvironment;
 import io.iec.edp.caf.datasource.CAFDataSourceSelector;
 import io.iec.edp.caf.msu.api.ServiceUnitAwareService;
 import io.iec.edp.caf.msu.api.client.ServiceDiscovery;
@@ -34,6 +35,9 @@ public class DBMsuServiceImpl extends MsuServiceImpl {
 
     //根据Su名称获取appServer信息
     public List<GspAppServerInstance> getGspAppServerInfoBySu(String suName) {
+        if (CafEnvironment.enablePrimaryDataService()) {
+            throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+        }
         try {
             CAFDataSourceSelector.selectMaster();
 
@@ -57,6 +61,9 @@ public class DBMsuServiceImpl extends MsuServiceImpl {
 
     //获取一个Su的信息
     public GspSuInstance getGspSuInfo(String suName) {
+        if (CafEnvironment.enablePrimaryDataService()) {
+            throw new RuntimeException("The Primary-Data-Service mode does not support using the database as a service registry. Please switch to Nacos or other alternatives.");
+        }
         try {
             CAFDataSourceSelector.selectMaster();