diff --git a/src/observer/virtual_table/ob_information_columns_table.cpp b/src/observer/virtual_table/ob_information_columns_table.cpp
index bff74b6d50..accfd1810e 100644
--- a/src/observer/virtual_table/ob_information_columns_table.cpp
+++ b/src/observer/virtual_table/ob_information_columns_table.cpp
@@ -19,6 +19,7 @@
 #include "lib/geo/ob_geo_utils.h"
 #include "share/schema/ob_schema_getter_guard.h"
 #include "share/inner_table/ob_inner_table_schema.h"
+#include "share/ob_lob_access_utils.h"
 #include "sql/session/ob_sql_session_info.h"
 #include "sql/parser/ob_parser.h"
 #include "sql/resolver/dml/ob_select_resolver.h"
@@ -536,19 +537,25 @@ int ObInfoSchemaColumnsTable::fill_row_cells(const ObString &database_name,
           }
         case COLUMN_DEFAULT: {
             casted_cell.reset();
+            cells[cell_idx].reset();
             const ObObj *res_cell = NULL;
             ObObj def_obj = column_schema->get_cur_default_value();
             ObObjType column_type = ObMaxType;
             const ObColumnSchemaV2 *tmp_column_schema = NULL;
             if (OB_ISNULL(table_schema_) ||
-                OB_ISNULL(tmp_column_schema = table_schema_->get_column_schema(col_id))) {
+                OB_ISNULL(tmp_column_schema = table_schema_->get_column_schema(col_id)) ||
+                OB_ISNULL(allocator_)) {
               ret = OB_ERR_UNEXPECTED;
-              SERVER_LOG(WARN, "table or column schema is null", KR(ret), KP(table_schema_), KP(tmp_column_schema));
+              SERVER_LOG(WARN, "table or column schema or or allocator is null", KR(ret), KP(table_schema_), KP(tmp_column_schema), KP(allocator_));
             } else if (FALSE_IT(column_type = tmp_column_schema->get_meta_type().get_type())) {
             } else if (IS_DEFAULT_NOW_OBJ(def_obj)) {
               ObObj def_now_obj;
               def_now_obj.set_string(column_type, ObString::make_string(N_UPPERCASE_CUR_TIMESTAMP));
-              cells[cell_idx] = def_now_obj;
+              if (OB_FAIL(ObTextStringResult::ob_convert_obj_temporay_lob(def_now_obj, *allocator_))) {
+                SERVER_LOG(WARN, "convert lob type obj fail", K(ret), K(def_now_obj));
+              } else {
+                cells[cell_idx] = def_now_obj;
+              }
             } else if (def_obj.is_bit() || ob_is_enum_or_set_type(def_obj.get_type())) {
               char *buf = NULL;
               int64_t buf_len = number::ObNumber::MAX_PRINTABLE_SIZE;
@@ -569,6 +576,10 @@ int ObInfoSchemaColumnsTable::fill_row_cells(const ObString &database_name,
                   cells[cell_idx].set_string(column_type, ObString(static_cast<int32_t>(pos), buf));
                 }
               }
+              if (OB_FAIL(ret)) {
+              } else if (OB_FAIL(ObTextStringResult::ob_convert_obj_temporay_lob(cells[cell_idx], *allocator_))) {
+                SERVER_LOG(WARN, "convert lob type obj fail", K(ret), K(cells[cell_idx]));
+              }
             } else {
               if (OB_FAIL(ObObjCaster::to_type(column_type, cast_ctx,
                                                def_obj,
@@ -977,21 +988,27 @@ int ObInfoSchemaColumnsTable::fill_row_cells(const common::ObString &database_na
           }
         case COLUMN_DEFAULT: {
             casted_cell.reset();
+            cells[cell_idx].reset();
             const ObObj *res_cell = NULL;
             ColumnItem column_item;
             ObObjType column_type = ObMaxType;
             const ObColumnSchemaV2 *tmp_column_schema = NULL;
             if (OB_ISNULL(table_schema_) ||
-                OB_ISNULL(tmp_column_schema = table_schema_->get_column_schema(col_id))) {
+                OB_ISNULL(tmp_column_schema = table_schema_->get_column_schema(col_id)) ||
+                OB_ISNULL(allocator_)) {
               ret = OB_ERR_UNEXPECTED;
-              SERVER_LOG(WARN, "table or column schema is null", KR(ret), KP(table_schema_), KP(tmp_column_schema));
+              SERVER_LOG(WARN, "table or column schema or allocator is null", KR(ret), KP(table_schema_), KP(tmp_column_schema), KP(allocator_));
             } else if (FALSE_IT(column_type = tmp_column_schema->get_meta_type().get_type())) {
             } else if (OB_FAIL(ObResolverUtils::resolve_default_value_and_expr_from_select_item(select_item, column_item, select_stmt))) {
               SERVER_LOG(WARN, "failed to resolve default value", K(ret));
             } else if (IS_DEFAULT_NOW_OBJ(column_item.default_value_)) {
               ObObj def_now_obj;
               def_now_obj.set_string(column_type, ObString::make_string(N_UPPERCASE_CUR_TIMESTAMP));
-              cells[cell_idx] = def_now_obj;
+              if (OB_FAIL(ObTextStringResult::ob_convert_obj_temporay_lob(def_now_obj, *allocator_))) {
+                SERVER_LOG(WARN, "convert lob type obj fail", K(ret), K(def_now_obj));
+              } else {
+                cells[cell_idx] = def_now_obj;
+              }
             } else if (column_item.default_value_.is_bit() || ob_is_enum_or_set_type(column_item.default_value_.get_type())) {
               char *buf = NULL;
               int64_t buf_len = number::ObNumber::MAX_PRINTABLE_SIZE;
@@ -1016,6 +1033,10 @@ int ObInfoSchemaColumnsTable::fill_row_cells(const common::ObString &database_na
                   cells[cell_idx].set_string(column_type, ObString(static_cast<int32_t>(pos), buf));
                 }
               }
+              if (OB_FAIL(ret)) {
+              } else if (OB_FAIL(ObTextStringResult::ob_convert_obj_temporay_lob(cells[cell_idx], *allocator_))) {
+                SERVER_LOG(WARN, "convert lob type obj fail", K(ret), K(cells[cell_idx]));
+              }
             } else {
               if (OB_FAIL(ObObjCaster::to_type(column_type, cast_ctx,
                                                column_item.default_value_,
diff --git a/tools/deploy/mysql_test/test_suite/lob/r/mysql/lob_basic_mysql.result b/tools/deploy/mysql_test/test_suite/lob/r/mysql/lob_basic_mysql.result
index 91c48495d0..22af204851 100644
--- a/tools/deploy/mysql_test/test_suite/lob/r/mysql/lob_basic_mysql.result
+++ b/tools/deploy/mysql_test/test_suite/lob/r/mysql/lob_basic_mysql.result
@@ -717,3 +717,27 @@ CREATE TABLE t1 (c1 tinyblob DEFAULT NULL, c2 varchar(161) DEFAULT 's&7dcwZ3nSn~
 (select nvl( c1 , c2 ) as c from t1) union all (select lower(c3) as c from t1);
 c
 drop table t1;
+CREATE TABLE t1 ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Select_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL,  Create_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, col_bit bit(64) default 0b010101, date_registered TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY Host (Host,Db,User), KEY User (User) ) CHARACTER SET utf8 COLLATE utf8_bin comment='Database privileges';
+select column_name, column_default from information_schema.columns where table_name='t1' and table_schema='test';
+column_name	column_default
+Host	
+Db	
+User	
+Select_priv	N
+Create_routine_priv	N
+col_bit	b'10101'
+date_registered	CURRENT_TIMESTAMP
+create view t1v1 as select  * from t1;
+drop table t1;
+CREATE TABLE t1 ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Select_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL,  Create_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, col_bit bit(64) default 0b010101, date_registered TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY Host (Host,Db,User), KEY User (User) ) CHARACTER SET utf8 COLLATE utf8_bin comment='Database privileges';
+select column_name, column_default from information_schema.columns where table_name = 't1v1';
+column_name	column_default
+Host	
+Db	
+User	
+Select_priv	N
+Create_routine_priv	N
+col_bit	b'10101'
+date_registered	CURRENT_TIMESTAMP
+drop view t1v1;
+drop table t1;
diff --git a/tools/deploy/mysql_test/test_suite/lob/t/lob_basic_mysql.test b/tools/deploy/mysql_test/test_suite/lob/t/lob_basic_mysql.test
index 992c168a6d..e4a7a975a0 100644
--- a/tools/deploy/mysql_test/test_suite/lob/t/lob_basic_mysql.test
+++ b/tools/deploy/mysql_test/test_suite/lob/t/lob_basic_mysql.test
@@ -270,4 +270,15 @@ drop table t1;
 
 CREATE TABLE t1 (c1 tinyblob DEFAULT NULL, c2 varchar(161) DEFAULT 's&7dcwZ3nSn~E(O', c3 text NOT NULL);
 (select nvl( c1 , c2 ) as c from t1) union all (select lower(c3) as c from t1);
-drop table t1;
\ No newline at end of file
+drop table t1;
+
+CREATE TABLE t1 ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Select_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL,  Create_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, col_bit bit(64) default 0b010101, date_registered TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY Host (Host,Db,User), KEY User (User) ) CHARACTER SET utf8 COLLATE utf8_bin comment='Database privileges';
+select column_name, column_default from information_schema.columns where table_name='t1' and table_schema='test';
+
+create view t1v1 as select  * from t1;
+drop table t1;
+CREATE TABLE t1 ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Select_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL,  Create_routine_priv enum('N','Y') COLLATE utf8_general_ci DEFAULT 'N' NOT NULL, col_bit bit(64) default 0b010101, date_registered TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY Host (Host,Db,User), KEY User (User) ) CHARACTER SET utf8 COLLATE utf8_bin comment='Database privileges';
+select column_name, column_default from information_schema.columns where table_name = 't1v1';
+
+drop view t1v1;
+drop table t1;