diff --git a/compose.postgres.yml b/compose.postgres.yml
deleted file mode 100644
index 025dcc3..0000000
--- a/compose.postgres.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: '3.3'
-services:
-  postgres:
-    image: 'daocloud.io/library/postgres'
-    environment:
-      POSTGRES_PASSWORD: mysecretpassword
-
-    ports:
-      - '5432:5432'
diff --git a/dtmsvr/dtmsvr.postgres.sql b/dtmsvr/dtmsvr.postgres.sql
deleted file mode 100644
index 29f92bf..0000000
--- a/dtmsvr/dtmsvr.postgres.sql
+++ /dev/null
@@ -1,72 +0,0 @@
-CREATE SCHEMA if not EXISTS dtm /* SQLINES DEMO *** RACTER SET utf8mb4 */;
-
-drop table IF EXISTS dtm.trans_global;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-CREATE SEQUENCE if not EXISTS dtm.trans_global_seq;
-
-CREATE TABLE if not EXISTS dtm.trans_global (
-  id int NOT NULL DEFAULT NEXTVAL ('dtm.trans_global_seq'),
-  gid varchar(128) NOT NULL ,
-  trans_type varchar(45) not null ,
-  data TEXT ,
-  status varchar(45) NOT NULL ,
-  query_prepared varchar(128) NOT NULL ,
-  create_time timestamp(0) DEFAULT NULL,
-  update_time timestamp(0) DEFAULT NULL,
-  commit_time timestamp(0) DEFAULT NULL,
-  finish_time timestamp(0) DEFAULT NULL,
-  rollback_time timestamp(0) DEFAULT NULL,
-  next_cron_interval int default null ,
-  next_cron_time timestamp(0) default null ,
-  owner varchar(128) not null default '' ,
-  PRIMARY KEY (id),
-  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 next_cron_time on dtm.trans_global (next_cron_time);
-
-drop table IF EXISTS dtm.trans_branch;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-CREATE SEQUENCE if not EXISTS dtm.trans_branch_seq;
-
-CREATE TABLE IF NOT EXISTS dtm.trans_branch (
-  id int NOT NULL DEFAULT NEXTVAL ('dtm.trans_branch_seq'),
-  gid varchar(128) NOT NULL ,
-  url varchar(128) NOT NULL ,
-  data TEXT ,
-  branch_id VARCHAR(128) NOT NULL ,
-  branch_type varchar(45) NOT NULL ,
-  status varchar(45) NOT NULL ,
-  finish_time timestamp(0) DEFAULT NULL,
-  rollback_time timestamp(0) DEFAULT NULL,
-  create_time timestamp(0) DEFAULT NULL,
-  update_time timestamp(0) DEFAULT NULL,
-  PRIMARY KEY (id),
-  CONSTRAINT gid_uniq UNIQUE  (gid,branch_id, branch_type)
-) ;
-
-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 int 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);
-
diff --git a/examples/examples.postgres.sql b/examples/examples.postgres.sql
deleted file mode 100644
index d657aed..0000000
--- a/examples/examples.postgres.sql
+++ /dev/null
@@ -1,62 +0,0 @@
-CREATE SCHEMA if not exists dtm_busi /* SQLINES DEMO *** RACTER SET utf8mb4 */;
-create SCHEMA  if not exists dtm_barrier /* SQLINES DEMO *** RACTER SET utf8mb4 */;
-
-drop table if exists dtm_busi.user_account;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create sequence if not exists dtm_busi.user_account_seq;
-
-create table if not exists dtm_busi.user_account(
-  id int PRIMARY KEY DEFAULT NEXTVAL ('dtm_busi.user_account_seq'),
-  user_id int UNIQUE ,
-  balance DECIMAL(10, 2) not null default '0',
-  create_time timestamp(0) DEFAULT now(),
-  update_time timestamp(0) DEFAULT now()
-);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists create_idx on dtm_busi.user_account(create_time);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists update_idx on dtm_busi.user_account(update_time);
-
-TRUNCATE dtm_busi.user_account;
-insert into dtm_busi.user_account (user_id, balance) values (1, 10000), (2, 10000);
-
-drop table if exists dtm_busi.user_account_trading;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create sequence if not exists dtm_busi.user_account_trading_seq;
-
-create table if not exists dtm_busi.user_account_trading( -- SQLINES DEMO *** �冻结的金额
-  id int PRIMARY KEY DEFAULT NEXTVAL ('dtm_busi.user_account_trading_seq'),
-  user_id int UNIQUE ,
-  trading_balance DECIMAL(10, 2) not null default '0',
-  create_time timestamp(0) DEFAULT now(),
-  update_time timestamp(0) DEFAULT now()
-);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists create_idx on dtm_busi.user_account_trading(create_time);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists update_idx on dtm_busi.user_account_trading(update_time);
-
-TRUNCATE dtm_busi.user_account_trading;
-insert into dtm_busi.user_account_trading (user_id, trading_balance) values (1, 0), (2, 0);
-
-
-drop table if exists dtm_barrier.barrier;
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create sequence if not exists dtm_barrier.barrier_seq;
-
-create table if not exists dtm_barrier.barrier(
-  id int PRIMARY KEY DEFAULT NEXTVAL ('dtm_barrier.barrier_seq'),
-  trans_type varchar(45) default '' ,
-  gid varchar(128) default'',
-  branch_id varchar(128) default '',
-  branch_type varchar(45) default '',
-  reason varchar(45) default '' ,
-  result varchar(2047) default null ,
-  create_time timestamp(0) DEFAULT now(),
-  update_time timestamp(0) DEFAULT now(),
-  UNIQUE (gid, branch_id, branch_type)
-);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists create_idx on dtm_barrier.barrier(create_time);
--- SQLINES LICENSE FOR EVALUATION USE ONLY
-create index if not exists update_idx on dtm_barrier.barrier(update_time);