diff --git a/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.cpp b/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.cpp
index c9f8c0f88..1d244dd5a 100644
--- a/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.cpp
+++ b/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.cpp
@@ -49,6 +49,11 @@ uint64_t __attribute__((weak)) get_current_tenant_id_for_dblink()
   return oceanbase::OB_INVALID_ID;
 }
 
+uint64_t __attribute__((weak)) get_max_dblink_conn_per_observer()
+{
+  return 256;
+}
+
 namespace oceanbase
 {
 namespace common
diff --git a/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.h b/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.h
index d7055b6f1..fce9c9d6c 100644
--- a/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.h
+++ b/deps/oblib/src/lib/mysqlclient/ob_dblink_error_trans.h
@@ -19,6 +19,7 @@
 extern bool get_dblink_reuse_connection_cfg();
 extern bool get_enable_dblink_cfg();
 extern uint64_t get_current_tenant_id_for_dblink();
+extern uint64_t get_max_dblink_conn_per_observer();
 
 namespace oceanbase
 {
diff --git a/deps/oblib/src/lib/mysqlclient/ob_server_connection_pool.cpp b/deps/oblib/src/lib/mysqlclient/ob_server_connection_pool.cpp
index de008d485..5d2d8cb89 100644
--- a/deps/oblib/src/lib/mysqlclient/ob_server_connection_pool.cpp
+++ b/deps/oblib/src/lib/mysqlclient/ob_server_connection_pool.cpp
@@ -210,6 +210,7 @@ int ObServerConnectionPool::init_dblink(uint64_t tenant_id, uint64_t dblink_id,
                                         ObMySQLConnectionPool *root, int64_t max_allowed_conn_count)
 {
   UNUSED(conn_str);
+  UNUSED(max_allowed_conn_count);
   int ret = OB_SUCCESS;
   if (OB_ISNULL(root)) {
     ret = OB_INVALID_ARGUMENT;
@@ -236,7 +237,7 @@ int ObServerConnectionPool::init_dblink(uint64_t tenant_id, uint64_t dblink_id,
     root_ = root;
     last_renew_timestamp_ = ::oceanbase::common::ObTimeUtility::current_time();
     server_not_available_ = false;
-    max_allowed_conn_count_ = max_allowed_conn_count;
+    max_allowed_conn_count_ = get_max_dblink_conn_per_observer();
     connection_pool_ptr_ = &dblink_connection_pool_;
     if (cluster_str.empty()) {
       (void)snprintf(db_user_, sizeof(db_user_), "%.*s@%.*s", db_user.length(), db_user.ptr(),
diff --git a/src/share/parameter/ob_parameter_seed.ipp b/src/share/parameter/ob_parameter_seed.ipp
index 74981f49c..cd5711122 100644
--- a/src/share/parameter/ob_parameter_seed.ipp
+++ b/src/share/parameter/ob_parameter_seed.ipp
@@ -1933,7 +1933,9 @@ DEF_BOOL(_enable_dblink_reuse_connection, OB_TENANT_PARAMETER, "True",
 DEF_INT(_with_subquery, OB_TENANT_PARAMETER, "0", "[0,2]",
         "WITH subquery transformation,0: optimizer,1: materialize,2: inline",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
-
+DEF_INT(_max_dblink_conn_per_observer, OB_TENANT_PARAMETER, "256", "[0,)",
+        "The maximum limit on the number of connections that can be opened simultaneously for a specific observer for any DBLink, default value is 256",
+        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
 DEF_BOOL(_xsolapi_generate_with_clause, OB_TENANT_PARAMETER, "True",
         "OLAP API generates WITH clause",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
diff --git a/src/sql/dblink/ob_dblink_utils.cpp b/src/sql/dblink/ob_dblink_utils.cpp
index 51aa71831..4820b5405 100644
--- a/src/sql/dblink/ob_dblink_utils.cpp
+++ b/src/sql/dblink/ob_dblink_utils.cpp
@@ -44,6 +44,12 @@ bool get_enable_dblink_cfg()
   return GCONF.enable_dblink;
 }
 
+uint64_t get_max_dblink_conn_per_observer()
+{
+   omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+  return tenant_config.is_valid() ? tenant_config->_max_dblink_conn_per_observer : 256;
+}
+
 uint64_t get_current_tenant_id_for_dblink()
 {
   return MTL_ID();
diff --git a/tools/deploy/mysql_test/test_suite/inner_table/r/mysql/all_virtual_sys_parameter_stat.result b/tools/deploy/mysql_test/test_suite/inner_table/r/mysql/all_virtual_sys_parameter_stat.result
index 792582ded..2bd89c96b 100644
--- a/tools/deploy/mysql_test/test_suite/inner_table/r/mysql/all_virtual_sys_parameter_stat.result
+++ b/tools/deploy/mysql_test/test_suite/inner_table/r/mysql/all_virtual_sys_parameter_stat.result
@@ -422,6 +422,7 @@ _lob_rowsets_max_rows
 _log_writer_parallelism
 _ls_gc_wait_readonly_tx_time
 _ls_migration_wait_completing_timeout
+_max_dblink_conn_per_observer
 _max_elr_dependent_trx_count
 _max_ls_cnt_per_server
 _max_malloc_sample_interval