diff --git a/bench/http.go b/bench/http.go
index 98817d7..8fba47a 100644
--- a/bench/http.go
+++ b/bench/http.go
@@ -41,7 +41,7 @@ func reloadData() {
 	time.Sleep(dtmsvr.UpdateBranchAsyncInterval * 2)
 	began := time.Now()
 	db := sdbGet()
-	tables := []string{"dtm_busi.user_account", "dtm_busi.user_account_log", "dtm.trans_global", "dtm.trans_branch", "dtm_barrier.barrier"}
+	tables := []string{"dtm_busi.user_account", "dtm_busi.user_account_log", "dtm.trans_global", "dtm.trans_branch_op", "dtm_barrier.barrier"}
 	for _, t := range tables {
 		_, err := dtmimp.DBExec(db, fmt.Sprintf("truncate %s", t))
 		dtmimp.FatalIfError(err)
diff --git a/dtmsvr/dtmsvr.go b/dtmsvr/dtmsvr.go
index 6f391c1..db03bbe 100644
--- a/dtmsvr/dtmsvr.go
+++ b/dtmsvr/dtmsvr.go
@@ -77,7 +77,7 @@ func updateBranchAsync() {
 		}
 		for len(updates) > 0 {
 			dbr := dbGet().Clauses(clause.OnConflict{
-				OnConstraint: "trans_branch_pkey",
+				OnConstraint: "trans_branch_op_pkey",
 				DoUpdates:    clause.AssignmentColumns([]string{"status", "finish_time"}),
 			}).Create(updates)
 			dtmimp.Logf("flushed %d branch status to db. affected: %d", len(updates), dbr.RowsAffected)
diff --git a/dtmsvr/dtmsvr.mysql.sql b/dtmsvr/dtmsvr.mysql.sql
index 39a1cc3..59d61dd 100644
--- a/dtmsvr/dtmsvr.mysql.sql
+++ b/dtmsvr/dtmsvr.mysql.sql
@@ -23,12 +23,10 @@ CREATE TABLE if not EXISTS dtm.trans_global (
   PRIMARY KEY (`id`),
   UNIQUE KEY `gid` (`gid`),
   key `owner`(`owner`),
-  KEY `create_time` (`create_time`),
-  KEY `update_time` (`update_time`),
   key `status_next_cron_time` (`status`, `next_cron_time`) comment '这个索引用于查询超时的全局事务，能够合理的走索引'
 ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;
-drop table IF EXISTS dtm.trans_branch;
-CREATE TABLE IF NOT EXISTS dtm.trans_branch (
+drop table IF EXISTS dtm.trans_branch_op;
+CREATE TABLE IF NOT EXISTS dtm.trans_branch_op (
   `id` bigint(22) NOT NULL AUTO_INCREMENT,
   `gid` varchar(128) NOT NULL COMMENT '事务全局id',
   `url` varchar(128) NOT NULL COMMENT '动作关联的url',
@@ -42,21 +40,5 @@ CREATE TABLE IF NOT EXISTS dtm.trans_branch (
   `create_time` datetime DEFAULT NULL,
   `update_time` datetime DEFAULT NULL,
   PRIMARY KEY (`id`),
-  UNIQUE KEY `gid_uniq` (`gid`, `branch_id`, `op`),
-  KEY `create_time` (`create_time`),
-  KEY `update_time` (`update_time`)
+  UNIQUE KEY `gid_uniq` (`gid`, `branch_id`, `op`)
 ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;
-drop table IF EXISTS dtm.trans_log;
-CREATE TABLE IF NOT EXISTS dtm.trans_log (
-  `id` bigint(22) NOT NULL AUTO_INCREMENT,
-  `gid` varchar(128) NOT NULL COMMENT '事务全局id',
-  `branch_id` varchar(128) DEFAULT NULL COMMENT '事务分支ID',
-  `action` varchar(45) DEFAULT NULL COMMENT '行为',
-  `old_status` varchar(45) NOT NULL DEFAULT '' COMMENT '旧状态',
-  `new_status` varchar(45) NOT NULL COMMENT '新状态',
-  `detail` TEXT NOT NULL COMMENT '行为记录的数据',
-  `create_time` datetime DEFAULT CURRENT_TIMESTAMP,
-  PRIMARY KEY (`id`),
-  KEY `gid` (`gid`),
-  KEY `create_time` (`create_time`)
-) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;
\ No newline at end of file
diff --git a/dtmsvr/dtmsvr.postgres.sql b/dtmsvr/dtmsvr.postgres.sql
index 30c5bd5..97da66c 100644
--- a/dtmsvr/dtmsvr.postgres.sql
+++ b/dtmsvr/dtmsvr.postgres.sql
@@ -25,14 +25,12 @@ CREATE TABLE if not EXISTS dtm.trans_global (
   CONSTRAINT gid UNIQUE (gid)
 );
 create index if not EXISTS owner on dtm.trans_global(owner);
-CREATE INDEX if not EXISTS create_time ON dtm.trans_global (create_time);
-CREATE INDEX if not EXISTS update_time ON dtm.trans_global (update_time);
 create index if not EXISTS status_next_cron_time on dtm.trans_global (status, next_cron_time);
-drop table IF EXISTS dtm.trans_branch;
+drop table IF EXISTS dtm.trans_branch_op;
 -- SQLINES LICENSE FOR EVALUATION USE ONLY
-CREATE SEQUENCE if not EXISTS dtm.trans_branch_seq;
-CREATE TABLE IF NOT EXISTS dtm.trans_branch (
-  id bigint NOT NULL DEFAULT NEXTVAL ('dtm.trans_branch_seq'),
+CREATE SEQUENCE if not EXISTS dtm.trans_branch_op_seq;
+CREATE TABLE IF NOT EXISTS dtm.trans_branch_op (
+  id bigint NOT NULL DEFAULT NEXTVAL ('dtm.trans_branch_op_seq'),
   gid varchar(128) NOT NULL,
   url varchar(128) NOT NULL,
   data TEXT,
@@ -46,22 +44,4 @@ CREATE TABLE IF NOT EXISTS dtm.trans_branch (
   update_time timestamp(0) DEFAULT NULL,
   PRIMARY KEY (id),
   CONSTRAINT gid_uniq UNIQUE (gid, branch_id, op)
-);
-CREATE INDEX if not EXISTS create_time ON dtm.trans_branch (create_time);
-CREATE INDEX if not EXISTS update_time ON dtm.trans_branch (update_time);
-drop table IF EXISTS dtm.trans_log;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-CREATE SEQUENCE if not EXISTS dtm.trans_log_seq;
-CREATE TABLE IF NOT EXISTS dtm.trans_log (
-  id bigint NOT NULL DEFAULT NEXTVAL ('dtm.trans_log_seq'),
-  gid varchar(128) NOT NULL,
-  branch_id varchar(128) DEFAULT NULL,
-  action varchar(45) DEFAULT NULL,
-  old_status varchar(45) NOT NULL DEFAULT '',
-  new_status varchar(45) NOT NULL,
-  detail TEXT NOT NULL,
-  create_time timestamp(0) DEFAULT CURRENT_TIMESTAMP,
-  PRIMARY KEY (id)
-);
-CREATE INDEX if not EXISTS gid ON dtm.trans_log (gid);
-CREATE INDEX if not EXISTS create_time ON dtm.trans_log (create_time);
\ No newline at end of file
+);
\ No newline at end of file
diff --git a/dtmsvr/trans.go b/dtmsvr/trans.go
index b4dea89..8dab820 100644
--- a/dtmsvr/trans.go
+++ b/dtmsvr/trans.go
@@ -105,7 +105,7 @@ type TransBranch struct {
 
 // TableName TableName
 func (*TransBranch) TableName() string {
-	return "dtm.trans_branch"
+	return "dtm.trans_branch_op"
 }
 
 func (t *TransBranch) changeStatus(db *common.DB, status string) *gorm.DB {