diff --git a/db/ddl.sql b/db/ddl.sql
index ecf7c9e..0987138 100644
--- a/db/ddl.sql
+++ b/db/ddl.sql
@@ -108,8 +108,8 @@ create table ENS_SND_DTL_KKO_TALK_STAT_HIS
     DISTRIBUTION_RECEIVED_AT     VARCHAR2(19),
     PAYLOAD                      VARCHAR2(255 char),
     SEND_DETAIL_ID               NUMBER(19) not null,
-    TOKEN_USED_AT                NUMBER(19),
-    USER_NOTIFIED_AT             NUMBER(19),
+    TOKEN_USED_AT                VARCHAR2(19),
+    USER_NOTIFIED_AT             VARCHAR2(19),
     ERROR_CODE                   VARCHAR2(255 char),
     ERROR_MESSAGE                CLOB,
     REGIST_DT                    TIMESTAMP(6)