diff --git a/src/sql/parser/parse_node.c b/src/sql/parser/parse_node.c
index 82b7666e4..e36c58890 100644
--- a/src/sql/parser/parse_node.c
+++ b/src/sql/parser/parse_node.c
@@ -994,3 +994,12 @@ ParseNode *adjust_inner_join_inner(int *error_code, ParseNode *inner_join, Parse
   }
   return ret_node;
 }
+
+extern int ob_backtrace_c(void **buffer, int size);
+extern char *parray_c(char *buf, int64_t len, int64_t *array, int size);
+char *parser_lbt(void **addr_buff, const size_t addr_size,
+                 char *str_buff, const size_t str_size)
+{
+  int size = ob_backtrace_c(addr_buff, addr_size);
+  return parray_c(str_buff, str_size, (int64_t *)addr_buff, size);
+}
diff --git a/src/sql/parser/sql_parser_base.h b/src/sql/parser/sql_parser_base.h
index 203ecb8b9..67a1860b9 100644
--- a/src/sql/parser/sql_parser_base.h
+++ b/src/sql/parser/sql_parser_base.h
@@ -69,6 +69,7 @@ extern bool check_real_escape(const struct ObCharsetInfo *cs, char *str, int64_t
                               int64_t last_escape_check_pos);
 
 int add_alias_name(ParseNode *node, ParseResult *result, int end);
+extern char *parser_lbt(void **addr_buff, const size_t addr_size, char *str_buff, const size_t str_size);
 
 #define ISSPACE(c) ((c) == ' ' || (c) == '\n' || (c) == '\r' || (c) == '\t' || (c) == '\f' || (c) == '\v')
 
@@ -140,7 +141,10 @@ do {
   if (OB_UNLIKELY(NULL == val_ptr))                                                \
   {                                                                                \
     ((ParseResult *)yyextra)->extra_errno_ = OB_PARSER_ERR_NO_MEMORY;              \
-    yyerror(yylloc, yyextra, "No more space for malloc\n");                        \
+    void *addrs[100];                                                              \
+    char buf[1024];                                                                \
+    char *print_str = parser_lbt(addrs, 100, buf, 1024);                           \
+    yyerror(yylloc, yyextra, "No more space for malloc, lbt: %s", print_str);      \
     return ERROR;                                                                  \
   }                                                                                \
 } while (0);
diff --git a/src/sql/parser/sql_parser_mysql_mode.y b/src/sql/parser/sql_parser_mysql_mode.y
index 545e6196a..fe2905d50 100644
--- a/src/sql/parser/sql_parser_mysql_mode.y
+++ b/src/sql/parser/sql_parser_mysql_mode.y
@@ -33,6 +33,7 @@
 #include "../../../src/sql/parser/sql_parser_base.h"
 
 extern void obsql_oracle_parse_fatal_error(int32_t errcode, yyscan_t yyscanner, yyconst char *msg, ...);
+extern int easy_vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
 
 #define GEN_EXPLAN_STMT(no_use, explain_stmt, explain_type, display_type, stmt, into_table, set_statement_id) \
   (void)(no_use); \
@@ -11091,6 +11092,9 @@ global_hint
 }
 | error
 {
+  if (OB_PARSER_ERR_NO_MEMORY == result->extra_errno_) {
+    YYABORT_NO_MEMORY;
+  }
   $$ = NULL;
 }
 ;
@@ -24664,13 +24668,7 @@ void yyerror(void *yylloc, ParseResult *p, char *s, ...)
     p->result_tree_ = 0;
     va_list ap;
     va_start(ap, s);
-    char *escaped_s = NULL;
-    ESCAPE_PERCENT(p, s, escaped_s);
-    if (OB_NOT_NULL(escaped_s)) {
-      vsnprintf(p->error_msg_, MAX_ERROR_MSG, escaped_s, ap);
-    } else {
-      vsnprintf(p->error_msg_, MAX_ERROR_MSG, s, ap);
-    }
+    easy_vsnprintf(p->error_msg_, MAX_ERROR_MSG, s, ap);
     if (OB_LIKELY(NULL != yylloc)) {
       YYLTYPE *yylloc_pointer = (YYLTYPE *)yylloc;
       if (OB_LIKELY(NULL != p->input_sql_) && p->input_sql_[yylloc_pointer->first_column - 1] != '\'') {
diff --git a/unittest/sql/parser/test_sql_fast_parser.cpp b/unittest/sql/parser/test_sql_fast_parser.cpp
index dd2c28e2e..118ede7e4 100644
--- a/unittest/sql/parser/test_sql_fast_parser.cpp
+++ b/unittest/sql/parser/test_sql_fast_parser.cpp
@@ -65,6 +65,17 @@ bool check_stack_overflow_c()
 {
   return 0;
 }
+
+int ob_backtrace_c(void **buffer, int size)
+{
+  return 0;
+}
+
+char *parray_c(char *buf, int64_t len, int64_t *array, int size)
+{
+  snprintf(buf, 0, "oceanbase");
+  return buf;
+}
 }
 
 using namespace oceanbase::sql;
@@ -284,6 +295,9 @@ void start_test_token_offset(const char *test_sqls[],
     ParseResult parse_result;
     int tmp_ptr = 1;
     setup_parse_result(parse_result, tmp_ptr);
+    if (2151678466 == sql_mode) {
+      parse_result.connection_collation_ = 45;
+    }
     parse_result.sql_mode_ = sql_mode;
     const char *input_sql = test_sqls[i];
 
diff --git a/unittest/sql/parser/test_sql_fast_parser.result b/unittest/sql/parser/test_sql_fast_parser.result
index b71ecc229..eec70db5d 100644
--- a/unittest/sql/parser/test_sql_fast_parser.result
+++ b/unittest/sql/parser/test_sql_fast_parser.result
@@ -136,3 +136,144 @@ T_STMT_LIST (null) off: -1 len: -1
 --------T_IDENT (primary) off: 25 len: 7
 Oracle mode: 
 /*+ c1 */ /* c2 */ select /* ignored */ /*+ no_rewrite, index(t1 primary)    */ /* ignored  */ c1 from t1;
+T_STMT_LIST (null) off: -1 len: -1
+--T_SELECT (null) off: 19 len: 6
+----T_PROJECT_LIST (null) off: -1 len: -1
+------T_PROJECT_STRING (C1) off: -1 len: -1
+--------T_OBJ_ACCESS_REF (c1) off: 95 len: 2
+----------T_IDENT (C1) off: 95 len: 2
+----T_FROM_LIST (null) off: 98 len: 4
+------T_ORG (null) off: -1 len: -1
+--------T_RELATION_FACTOR (T1) off: -1 len: -1
+----------T_IDENT (T1) off: 103 len: 2
+----T_HINT_OPTION_LIST (null) off: 78 len: 37
+------T_NO_REWRITE (null) off: -1 len: -1
+------T_INDEX_HINT (null) off: -1 len: -1
+--------T_RELATION_FACTOR_IN_HINT (null) off: -1 len: -1
+----------T_RELATION_FACTOR (t1) off: -1 len: -1
+------------T_IDENT (t1) off: 62 len: 2
+--------T_IDENT (primary) off: 65 len: 7
+i: 0, off: 0, len: 9
+i: 1, off: 10, len: 8
+select * from t1 where c1 = c2+1*2/3-4 and rownum < 1 order by c1 + 2;
+T_STMT_LIST (null) off: -1 len: -1
+--T_SELECT (null) off: 0 len: 6
+----T_PROJECT_LIST (null) off: -1 len: -1
+------T_PROJECT_STRING (*) off: 7 len: 1
+--------T_STAR (null) off: -1 len: -1
+----T_FROM_LIST (null) off: 9 len: 4
+------T_ORG (null) off: -1 len: -1
+--------T_RELATION_FACTOR (T1) off: -1 len: -1
+----------T_IDENT (T1) off: 14 len: 2
+----T_WHERE_CLAUSE (null) off: -1 len: -1
+------T_OP_AND (null) off: -1 len: -1
+--------T_OP_EQ (c1 = c2+1*2/3-4) off: 23 len: 15
+----------T_OBJ_ACCESS_REF (c1) off: 23 len: 2
+------------T_IDENT (C1) off: 23 len: 2
+----------T_OP_MINUS (c2+1*2/3-4) off: 28 len: 10
+------------T_OP_ADD (c2+1*2/3) off: 28 len: 8
+--------------T_OBJ_ACCESS_REF (c2) off: 28 len: 2
+----------------T_IDENT (C2) off: 28 len: 2
+--------------T_OP_DIV (1*2/3) off: 31 len: 5
+----------------T_OP_MUL (1*2) off: 31 len: 3
+------------------T_INT (1) off: 31 len: 1
+------------------T_INT (2) off: 33 len: 1
+----------------T_INT (3) off: 35 len: 1
+------------T_INT (4) off: 37 len: 1
+--------T_OP_LT (rownum < 1) off: 43 len: 10
+----------T_FUN_SYS (rownum) off: 43 len: 6
+------------T_IDENT (rownum) off: -1 len: -1
+----------T_INT (1) off: 52 len: 1
+----T_ORDER_BY (null) off: 54 len: 8
+------T_SORT_LIST (null) off: -1 len: -1
+--------T_SORT_KEY (null) off: -1 len: -1
+----------T_OP_ADD (c1 + 2) off: 63 len: 6
+------------T_OBJ_ACCESS_REF (c1) off: 63 len: 2
+--------------T_IDENT (C1) off: 63 len: 2
+------------T_INT (2) off: 68 len: 1
+----------T_SORT_ASC (null) off: -1 len: -1
+select * from t1 where c1 = c2+1*2/3-4 and rownum < 1+1 order by c1 + 2;
+T_STMT_LIST (null) off: -1 len: -1
+--T_SELECT (null) off: 0 len: 6
+----T_PROJECT_LIST (null) off: -1 len: -1
+------T_PROJECT_STRING (*) off: 7 len: 1
+--------T_STAR (null) off: -1 len: -1
+----T_FROM_LIST (null) off: 9 len: 4
+------T_ORG (null) off: -1 len: -1
+--------T_RELATION_FACTOR (T1) off: -1 len: -1
+----------T_IDENT (T1) off: 14 len: 2
+----T_WHERE_CLAUSE (null) off: -1 len: -1
+------T_OP_AND (null) off: -1 len: -1
+--------T_OP_EQ (c1 = c2+1*2/3-4) off: 23 len: 15
+----------T_OBJ_ACCESS_REF (c1) off: 23 len: 2
+------------T_IDENT (C1) off: 23 len: 2
+----------T_OP_MINUS (c2+1*2/3-4) off: 28 len: 10
+------------T_OP_ADD (c2+1*2/3) off: 28 len: 8
+--------------T_OBJ_ACCESS_REF (c2) off: 28 len: 2
+----------------T_IDENT (C2) off: 28 len: 2
+--------------T_OP_DIV (1*2/3) off: 31 len: 5
+----------------T_OP_MUL (1*2) off: 31 len: 3
+------------------T_INT (1) off: 31 len: 1
+------------------T_INT (2) off: 33 len: 1
+----------------T_INT (3) off: 35 len: 1
+------------T_INT (4) off: 37 len: 1
+--------T_OP_LT (rownum < 1+1) off: 43 len: 12
+----------T_FUN_SYS (rownum) off: 43 len: 6
+------------T_IDENT (rownum) off: -1 len: -1
+----------T_OP_ADD (1+1) off: 52 len: 3
+------------T_INT (1) off: 52 len: 1
+------------T_INT (1) off: 54 len: 1
+----T_ORDER_BY (null) off: 56 len: 8
+------T_SORT_LIST (null) off: -1 len: -1
+--------T_SORT_KEY (null) off: -1 len: -1
+----------T_OP_ADD (c1 + 2) off: 65 len: 6
+------------T_OBJ_ACCESS_REF (c1) off: 65 len: 2
+--------------T_IDENT (C1) off: 65 len: 2
+------------T_INT (2) off: 70 len: 1
+----------T_SORT_ASC (null) off: -1 len: -1
+select /*+ index(t1.c1 primary) */* from t1 where "name" = 'abc';
+T_STMT_LIST (null) off: -1 len: -1
+--T_SELECT (null) off: 0 len: 6
+----T_PROJECT_LIST (null) off: -1 len: -1
+------T_PROJECT_STRING (*) off: 34 len: 1
+--------T_STAR (null) off: -1 len: -1
+----T_FROM_LIST (null) off: 36 len: 4
+------T_ORG (null) off: -1 len: -1
+--------T_RELATION_FACTOR (T1) off: -1 len: -1
+----------T_IDENT (T1) off: 41 len: 2
+----T_WHERE_CLAUSE (null) off: -1 len: -1
+------T_OP_EQ ("name" = 'abc') off: 50 len: 14
+--------T_OBJ_ACCESS_REF ("name") off: 50 len: 6
+----------T_IDENT (name) off: 51 len: 4
+--------T_CHAR ('abc') off: 59 len: 5
+----------T_VARCHAR (abc) off: 60 len: 3
+----T_HINT_OPTION_LIST (null) off: 33 len: 25
+------T_INDEX_HINT (null) off: -1 len: -1
+--------T_RELATION_FACTOR_IN_HINT (null) off: -1 len: -1
+----------T_RELATION_FACTOR (c1) off: -1 len: -1
+------------T_IDENT (t1) off: 17 len: 2
+------------T_IDENT (c1) off: 20 len: 2
+--------T_IDENT (primary) off: 23 len: 7
+select /*+ index(t1.name primary) */* from t1 where "c1" = 'abc';
+T_STMT_LIST (null) off: -1 len: -1
+--T_SELECT (null) off: 0 len: 6
+----T_PROJECT_LIST (null) off: -1 len: -1
+------T_PROJECT_STRING (*) off: 36 len: 1
+--------T_STAR (null) off: -1 len: -1
+----T_FROM_LIST (null) off: 38 len: 4
+------T_ORG (null) off: -1 len: -1
+--------T_RELATION_FACTOR (T1) off: -1 len: -1
+----------T_IDENT (T1) off: 43 len: 2
+----T_WHERE_CLAUSE (null) off: -1 len: -1
+------T_OP_EQ ("c1" = 'abc') off: 52 len: 12
+--------T_OBJ_ACCESS_REF ("c1") off: 52 len: 4
+----------T_IDENT (c1) off: 53 len: 2
+--------T_CHAR ('abc') off: 59 len: 5
+----------T_VARCHAR (abc) off: 60 len: 3
+----T_HINT_OPTION_LIST (null) off: 35 len: 27
+------T_INDEX_HINT (null) off: -1 len: -1
+--------T_RELATION_FACTOR_IN_HINT (null) off: -1 len: -1
+----------T_RELATION_FACTOR (name) off: -1 len: -1
+------------T_IDENT (t1) off: 17 len: 2
+------------T_IDENT (name) off: 20 len: 4
+--------T_IDENT (primary) off: 25 len: 7