diff --git a/src/sql/engine/basic/ob_temp_row_store.cpp b/src/sql/engine/basic/ob_temp_row_store.cpp
index 0a95af1e23..3434106d52 100644
--- a/src/sql/engine/basic/ob_temp_row_store.cpp
+++ b/src/sql/engine/basic/ob_temp_row_store.cpp
@@ -331,7 +331,9 @@ int ObTempRowStore::Iterator::get_next_batch(const IVectorPtrs &vectors,
   }
   if (OB_SUCC(ret) && read_rows > 0) {
     for (int64_t col_idx = 0; OB_SUCC(ret) && col_idx < vectors.count(); col_idx ++) {
-      ret = vectors.at(col_idx)->from_rows(row_store_->row_meta_, rows, read_rows, col_idx);
+      if (VEC_UNIFORM_CONST != vectors.at(col_idx)->get_format()) {
+        ret = vectors.at(col_idx)->from_rows(row_store_->row_meta_, rows, read_rows, col_idx);
+      }
     }
   }
   return ret;
diff --git a/src/sql/ob_sql.cpp b/src/sql/ob_sql.cpp
index 231efece34..cddc83cae5 100644
--- a/src/sql/ob_sql.cpp
+++ b/src/sql/ob_sql.cpp
@@ -3867,7 +3867,7 @@ int ObSql::pc_get_plan(ObPlanCacheCtx &pc_ctx,
       tmp_ret = OB_E(EventTable::EN_PC_NOT_SWALLOW_ERROR) OB_SUCCESS;
       if (OB_SUCCESS != tmp_ret) {
          // do nothing
-        if (OB_SQL_PC_NOT_EXIST == ret) {
+        if (OB_SQL_PC_NOT_EXIST == ret || OB_REACH_MEMORY_LIMIT == ret) {
           ret = OB_SUCCESS;
         }
       } else {
@@ -4202,7 +4202,7 @@ int ObSql::parser_and_check(const ObString &outlined_stmt,
 
   if (OB_SUCC(ret)) {
     //租户级别的read only检查
-    if ((session->is_inner() && !pc_ctx.sql_ctx_.is_from_pl_) || pc_ctx.is_begin_commit_stmt()) {
+    if (session->is_inner() || pc_ctx.is_begin_commit_stmt()) {
       // FIXME:
       // schema拆分后，为了避免建租户时获取不到租户read only属性导致建租户失败，对于inner sql
       // 暂时跳过read only检查。实际上，对于tenant space系统表，不应该检查read only属性。
diff --git a/src/sql/plan_cache/ob_pcv_set.cpp b/src/sql/plan_cache/ob_pcv_set.cpp
index 43e25a0896..8642cb6244 100644
--- a/src/sql/plan_cache/ob_pcv_set.cpp
+++ b/src/sql/plan_cache/ob_pcv_set.cpp
@@ -247,7 +247,7 @@ int ObPCVSet::inner_add_cache_obj(ObILibCacheCtx &ctx,
              K(pc_ctx.sql_ctx_.session_info_));
   } else if (get_plan_num() >= MAX_PCV_SET_PLAN_NUM) {
     static const int64_t PRINT_PLAN_EXCEEDS_LOG_INTERVAL = 20 * 1000 * 1000; // 20s
-    ret = OB_ERR_UNEXPECTED;
+    ret = OB_REACH_MEMORY_LIMIT;
     if (REACH_TIME_INTERVAL(PRINT_PLAN_EXCEEDS_LOG_INTERVAL)) {
       LOG_INFO("number of plans in a single pcv_set reach limit", K(ret), K(get_plan_num()), K(pc_ctx));
     }
diff --git a/src/sql/plan_cache/ob_plan_cache.cpp b/src/sql/plan_cache/ob_plan_cache.cpp
index f390c59188..c577787de9 100644
--- a/src/sql/plan_cache/ob_plan_cache.cpp
+++ b/src/sql/plan_cache/ob_plan_cache.cpp
@@ -594,7 +594,7 @@ int ObPlanCache::get_plan(common::ObIAllocator &allocator,
         if (GCONF.enable_perf_event) {
           uint64_t tenant_id = pc_ctx.sql_ctx_.session_info_->get_effective_tenant_id();
           bool read_only = false;
-          if ((pc_ctx.sql_ctx_.session_info_->is_inner() && !pc_ctx.sql_ctx_.is_from_pl_)) {
+          if (pc_ctx.sql_ctx_.session_info_->is_inner()) {
             // do nothing
           } else if (OB_FAIL(pc_ctx.sql_ctx_.schema_guard_->get_tenant_read_only(tenant_id,
                                                                                  read_only))) {
@@ -2266,7 +2266,7 @@ int ObPlanCache::get_ps_plan(ObCacheObjGuard& guard,
   if (OB_SUCC(ret) && GCONF.enable_perf_event) {
     uint64_t tenant_id = pc_ctx.sql_ctx_.session_info_->get_effective_tenant_id();
     bool read_only = false;
-    if ((pc_ctx.sql_ctx_.session_info_->is_inner() && !pc_ctx.sql_ctx_.is_from_pl_)) {
+    if (pc_ctx.sql_ctx_.session_info_->is_inner()) {
       // do nothing
     } else if (OB_FAIL(pc_ctx.sql_ctx_.schema_guard_->get_tenant_read_only(tenant_id, read_only))) {
       SQL_PC_LOG(WARN, "fail to get tenant read only attribute", K(tenant_id), K(ret));