From 830b1e3d76b2dfd0018a13e1544d770b1162e742 Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Mon, 13 Mar 2023 08:41:04 +0000
Subject: [PATCH] fix param info field is not deep copied

---
 src/observer/virtual_table/ob_gv_sql.cpp | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/observer/virtual_table/ob_gv_sql.cpp b/src/observer/virtual_table/ob_gv_sql.cpp
index 8c2462a977..e1f076c304 100644
--- a/src/observer/virtual_table/ob_gv_sql.cpp
+++ b/src/observer/virtual_table/ob_gv_sql.cpp
@@ -346,10 +346,17 @@ int ObGVSql::fill_cells(const ObILibCacheObject *cache_obj, const ObPlanCache &p
     }
     case share::ALL_VIRTUAL_PLAN_STAT_CDE::PARAM_INFOS: {
       if (cache_obj->is_sql_crsr()) {
-        cells[i].set_lob_value(ObLongTextType, plan->stat_.param_infos_.ptr(),
-                               static_cast<int32_t>(plan->stat_.param_infos_.length()));
-        cells[i].set_collation_type(ObCharset::get_default_collation(
-                                      ObCharset::get_default_charset()));
+        ObString param_info_lob_str;
+        if (OB_FAIL(ob_write_string(*allocator_,
+                                    plan->stat_.param_infos_,
+                                    param_info_lob_str))) {
+          SERVER_LOG(ERROR, "copy param_infos failed", K(ret));
+        } else {
+          cells[i].set_lob_value(ObLongTextType, param_info_lob_str.ptr(),
+                                  static_cast<int32_t>(param_info_lob_str.length()));
+          cells[i].set_collation_type(ObCharset::get_default_collation(
+                                        ObCharset::get_default_charset()));
+        }
       } else {
         cells[i].set_null();
       }