diff --git a/app/main.go b/app/main.go
index 2f35461..6fba92a 100644
--- a/app/main.go
+++ b/app/main.go
@@ -4,6 +4,7 @@ import (
 	"os"
 	"time"
 
+	"github.com/sirupsen/logrus"
 	"github.com/yedf/dtm/dtmsvr"
 	"github.com/yedf/dtm/examples"
 )
@@ -11,13 +12,22 @@ import (
 type M = map[string]interface{}
 
 func main() {
-	if len(os.Args) == 1 { // 所有服务都启动
+	if len(os.Args) == 1 { // 默认情况下，展示saga例子
+		examples.PopulateMysql()
+		go dtmsvr.StartSvr()
+		go examples.SagaStartSvr()
+		examples.SagaFireRequest()
+	} else if os.Args[1] == "dtmsvr" {
+		go dtmsvr.StartSvr()
+	} else if os.Args[1] == "all" {
+		dtmsvr.PopulateMysql()
+		examples.PopulateMysql()
 		go dtmsvr.StartSvr()
 		go examples.SagaStartSvr()
 		go examples.TccStartSvr()
 		go examples.XaStartSvr()
-	} else if os.Args[1] == "dtmsvr" {
-		go dtmsvr.StartSvr()
+	} else {
+		logrus.Fatalf("unknown arg: %s", os.Args[1])
 	}
 	for {
 		time.Sleep(1000 * time.Second)
diff --git a/common/conf.yml.sample b/common/conf.yml.sample
deleted file mode 100644
index e69de29..0000000
diff --git a/common/types_test.go b/common/types_test.go
index 9ac4fff..fb42e32 100644
--- a/common/types_test.go
+++ b/common/types_test.go
@@ -13,7 +13,7 @@ type testConfig struct {
 var config = testConfig{}
 
 var myinit int = func() int {
-	InitApp(&config)
+	InitApp(GetCurrentPath(), &config)
 	return 0
 }()
 
diff --git a/common/utils.go b/common/utils.go
index 6eab953..28e648c 100644
--- a/common/utils.go
+++ b/common/utils.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"os"
 	"path"
 	"path/filepath"
 	"runtime"
@@ -195,16 +196,25 @@ func (f *formatter) Format(entry *logrus.Entry) ([]byte, error) {
 var configLoaded = map[string]bool{}
 
 // 加载调用者文件相同目录下的配置文件
-func InitApp(config interface{}) {
+func InitApp(dir string, config interface{}) {
 	logrus.SetFormatter(&formatter{})
-	_, file, _, _ := runtime.Caller(1)
-	fileName := filepath.Dir(file) + "/conf.yml"
-	if !configLoaded[fileName] {
-		configLoaded[fileName] = true
-		viper.SetConfigFile(fileName)
+	if !configLoaded[dir] {
+		configLoaded[dir] = true
+		viper.SetConfigFile(dir + "/conf.yml")
 		err := viper.ReadInConfig()
 		E2P(err)
 	}
 	err := viper.Unmarshal(config)
 	E2P(err)
 }
+
+func Getwd() string {
+	wd, err := os.Getwd()
+	E2P(err)
+	return wd
+}
+
+func GetCurrentPath() string {
+	_, file, _, _ := runtime.Caller(1)
+	return filepath.Dir(file)
+}
diff --git a/common/utils_test.go b/common/utils_test.go
index 1c92d23..27189c5 100644
--- a/common/utils_test.go
+++ b/common/utils_test.go
@@ -5,6 +5,7 @@ import (
 	"io"
 	"net/http"
 	"net/http/httptest"
+	"path/filepath"
 	"strings"
 	"testing"
 
@@ -93,3 +94,8 @@ func TestResty(t *testing.T) {
 	})
 	assert.NotEqual(t, nil, err2)
 }
+
+func TestCaller(t *testing.T) {
+	p := GetCurrentFilePath()
+	assert.Equal(t, true, strings.HasSuffix(filepath.Dir(p), "common"))
+}
diff --git a/docker-compose.yml b/docker-compose.yml
index 3ec9779..9362d71 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,6 @@
 version: '3.3'
 services:
-  web:
+  api:
     build: .
     ports:
       - '80:4005'
diff --git a/dtmsvr/dtmsvr.sql b/dtmsvr/dtmsvr.sql
index 3576951..2641759 100644
--- a/dtmsvr/dtmsvr.sql
+++ b/dtmsvr/dtmsvr.sql
@@ -1,9 +1,9 @@
--- CREATE DATABASE `dtm` /*!40100 DEFAULT CHARACTER SET utf8mb4 */;
+CREATE DATABASE IF NOT EXISTS `dtm` /*!40100 DEFAULT CHARACTER SET utf8mb4 */;
 
--- use dtm;
+use dtm;
 
 drop table IF EXISTS saga;
-CREATE TABLE `saga` (
+CREATE TABLE IF NOT EXISTS `saga` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `gid` varchar(45) NOT NULL COMMENT '事务全局id',
   `steps` json NOT NULL COMMENT 'saga的所有步骤',
@@ -20,7 +20,7 @@ CREATE TABLE `saga` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
 drop table IF EXISTS saga_step;
-CREATE TABLE `saga_step` (
+CREATE TABLE IF NOT EXISTS `saga_step` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `gid` varchar(45) NOT NULL COMMENT '事务全局id',
   `data` json DEFAULT NULL COMMENT '请求所携带的数据',
@@ -39,7 +39,7 @@ CREATE TABLE `saga_step` (
 ) ENGINE=InnoDB AUTO_INCREMENT=17 DEFAULT CHARSET=utf8mb4;
 
 drop table IF EXISTS trans_log;
-CREATE TABLE `trans_log` (
+CREATE TABLE IF NOT EXISTS `trans_log` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `gid` varchar(45) NOT NULL COMMENT '事务全局id',
   `step` int(11) DEFAULT NULL COMMENT 'saga的步骤',
diff --git a/dtmsvr/dtmsvr_test.go b/dtmsvr/dtmsvr_test.go
index 7f57bea..319d042 100644
--- a/dtmsvr/dtmsvr_test.go
+++ b/dtmsvr/dtmsvr_test.go
@@ -13,7 +13,7 @@ import (
 )
 
 var myinit int = func() int {
-	common.InitApp(&config)
+	common.InitApp(common.GetCurrentPath(), &config)
 	return 0
 }()
 
@@ -24,7 +24,7 @@ func TestViper(t *testing.T) {
 
 func TestDtmSvr(t *testing.T) {
 	TransProcessedTestChan = make(chan string, 1)
-
+	PopulateMysql()
 	// 启动组件
 	go StartSvr()
 	go examples.SagaStartSvr()
diff --git a/dtmsvr/main.go b/dtmsvr/main.go
index 9118d3a..0577e9f 100644
--- a/dtmsvr/main.go
+++ b/dtmsvr/main.go
@@ -3,6 +3,7 @@ package dtmsvr
 import (
 	"github.com/sirupsen/logrus"
 	"github.com/yedf/dtm/common"
+	"github.com/yedf/dtm/examples"
 )
 
 func Main() {
@@ -11,9 +12,14 @@ func Main() {
 
 func StartSvr() {
 	logrus.Printf("start dtmsvr")
-	common.InitApp(&config)
+	common.InitApp(common.GetCurrentPath(), &config)
 	app := common.GetGinApp()
 	AddRoute(app)
 	logrus.Printf("dtmsvr listen at: 8080")
 	app.Run(":8080")
 }
+
+func PopulateMysql() {
+	common.InitApp(common.GetCurrentPath(), &config)
+	examples.RunSqlScript(config.Mysql, common.GetCurrentPath()+"/dtmsvr.sql")
+}
diff --git a/examples/examples.sql b/examples/examples.sql
index b5e2d9d..0b2ae44 100644
--- a/examples/examples.sql
+++ b/examples/examples.sql
@@ -1,3 +1,4 @@
+CREATE DATABASE `dtm_busi` /*!40100 DEFAULT CHARACTER SET utf8mb4 */;
 use dtm_busi;
 drop table if exists user_account;
 create table user_account(
diff --git a/examples/main_saga.go b/examples/main_saga.go
index 7a6fc79..d39283f 100644
--- a/examples/main_saga.go
+++ b/examples/main_saga.go
@@ -18,7 +18,7 @@ var SagaBusi = fmt.Sprintf("http://localhost:%d%s", SagaBusiPort, SagaBusiApi)
 
 func SagaMain() {
 	go SagaStartSvr()
-	sagaFireRequest()
+	SagaFireRequest()
 	time.Sleep(1000 * time.Second)
 }
 
@@ -29,7 +29,7 @@ func SagaStartSvr() {
 	app.Run(fmt.Sprintf(":%d", SagaBusiPort))
 }
 
-func sagaFireRequest() {
+func SagaFireRequest() {
 	gid := common.GenGid()
 	logrus.Printf("busi transaction begin: %s", gid)
 	req := &TransReq{
diff --git a/examples/main_xa.go b/examples/main_xa.go
index 5709c9c..e42e447 100644
--- a/examples/main_xa.go
+++ b/examples/main_xa.go
@@ -39,7 +39,8 @@ func XaMain() {
 }
 
 func XaStartSvr() {
-	common.InitApp(&Config)
+	common.InitApp(common.GetCurrentPath(), &Config)
+	dbGet()
 	logrus.Printf("xa examples starting")
 	app := common.GetGinApp()
 	XaClient = dtm.XaClientNew(DtmServer, Config.Mysql, app, XaBusi+"/xa")