diff --git a/server/profile/profile.go b/server/profile/profile.go
index 7091304..ddfa826 100644
--- a/server/profile/profile.go
+++ b/server/profile/profile.go
@@ -34,7 +34,7 @@ func (p *Profile) IsDev() bool {
 	return p.Mode != "prod"
 }
 
-func checkDSN(dataDir string) (string, error) {
+func checkDataDir(dataDir string) (string, error) {
 	// Convert to absolute path if relative path is supplied.
 	if !filepath.IsAbs(dataDir) {
 		relativeDir := filepath.Join(filepath.Dir(os.Args[0]), dataDir)
@@ -82,15 +82,19 @@ func GetProfile() (*Profile, error) {
 		}
 	}
 
-	dataDir, err := checkDSN(profile.Data)
-	if err != nil {
-		fmt.Printf("Failed to check dsn: %s, err: %+v\n", dataDir, err)
-		return nil, err
-	}
+	if profile.Driver == "sqlite" {
+		dataDir, err := checkDataDir(profile.Data)
+		if err != nil {
+			fmt.Printf("Failed to check dsn: %s, err: %+v\n", dataDir, err)
+			return nil, err
+		}
 
-	profile.Data = dataDir
-	dbFile := fmt.Sprintf("slash_%s.db", profile.Mode)
-	profile.DSN = filepath.Join(dataDir, dbFile)
+		profile.Data = dataDir
+		if profile.DSN == "" {
+			dbFile := fmt.Sprintf("slash_%s.db", profile.Mode)
+			profile.DSN = filepath.Join(dataDir, dbFile)
+		}
+	}
 	profile.Version = version.GetCurrentVersion(profile.Mode)
 
 	return &profile, nil
diff --git a/store/db/postgres/migrator.go b/store/db/postgres/migrator.go
index d1399cb..c295753 100644
--- a/store/db/postgres/migrator.go
+++ b/store/db/postgres/migrator.go
@@ -8,7 +8,6 @@ import (
 	"os"
 	"regexp"
 	"sort"
-	"time"
 
 	"github.com/pkg/errors"
 
@@ -72,16 +71,6 @@ func (d *DB) Migrate(ctx context.Context) error {
 
 			if version.IsVersionGreaterThan(version.GetSchemaVersion(currentVersion), latestMigrationHistoryVersion) {
 				minorVersionList := getMinorVersionList()
-				// backup the raw database file before migration
-				rawBytes, err := os.ReadFile(d.profile.DSN)
-				if err != nil {
-					return errors.Wrap(err, "failed to read raw database file")
-				}
-				backupDBFilePath := fmt.Sprintf("%s/memos_%s_%d_backup.db", d.profile.Data, d.profile.Version, time.Now().Unix())
-				if err := os.WriteFile(backupDBFilePath, rawBytes, 0644); err != nil {
-					return errors.Wrap(err, "failed to write raw database file")
-				}
-				println("succeed to copy a backup database file")
 				println("start migrate")
 				for _, minorVersion := range minorVersionList {
 					normalizedVersion := minorVersion + ".0"
@@ -93,11 +82,6 @@ func (d *DB) Migrate(ctx context.Context) error {
 					}
 				}
 				println("end migrate")
-
-				// remove the created backup db file after migrate succeed
-				if err := os.Remove(backupDBFilePath); err != nil {
-					println(fmt.Sprintf("Failed to remove temp database file, err %v", err))
-				}
 			}
 		}
 	} else {