diff --git a/app/Console/Commands/ExportSqlite.php b/app/Console/Commands/ExportSqlite.php
index a72cc02..942c8a7 100644
--- a/app/Console/Commands/ExportSqlite.php
+++ b/app/Console/Commands/ExportSqlite.php
@@ -5,6 +5,7 @@ namespace App\Console\Commands;
 use Illuminate\Console\Command;
 use App\Jobs\ExportSqliteUserJob;
 use App\Jobs\ExportSqliteSongJob;
+use App\Jobs\ExportSqliteFavoriteJob;
 use Illuminate\Support\Facades\Bus;
 
 class ExportSqlite extends Command
diff --git a/app/Jobs/ExportSqliteFavoriteJob.php b/app/Jobs/ExportSqliteFavoriteJob.php
index 6a7072e..5e4c03c 100644
--- a/app/Jobs/ExportSqliteFavoriteJob.php
+++ b/app/Jobs/ExportSqliteFavoriteJob.php
@@ -32,14 +32,14 @@ class ExportSqliteFavoriteJob implements ShouldQueue
         if (!file_exists($sqlitePath)) {
             file_put_contents($sqlitePath, '');
         }
-
-        config(['database.connections.tempsqlite' => [
+        $connectionName = 'tempsqlite_' . md5($sqlitePath . microtime());
+        config(["database.connections.{$connectionName}" => [
             'driver' => 'sqlite',
             'database' => $sqlitePath,
             'prefix' => '',
         ]]);
 
-        $exporter = new SqliteExportService();
+        $exporter = new SqliteExportService($connectionName);
         $exporter->exportMultiple([
             'FavoriteSongs' => [
                 'query' => fn () => DB::table('FavoriteSongs'),
@@ -57,6 +57,7 @@ class ExportSqliteFavoriteJob implements ShouldQueue
                 ],
             ],
         ]);
+        DB::purge($connectionName);
         SendSqliteFileJob::dispatch($sqlitePath);
     }
 }
diff --git a/app/Jobs/ExportSqliteSongJob.php b/app/Jobs/ExportSqliteSongJob.php
index c2a19d6..c9f666b 100644
--- a/app/Jobs/ExportSqliteSongJob.php
+++ b/app/Jobs/ExportSqliteSongJob.php
@@ -35,15 +35,15 @@ class ExportSqliteSongJob implements ShouldQueue
         if (!file_exists($sqlitePath)) {
             file_put_contents($sqlitePath, '');
         }
-
-        config(['database.connections.tempsqlite' => [
+        $connectionName = 'tempsqlite_' . md5($sqlitePath . microtime());
+        config(["database.connections.{$connectionName}" => [
             'driver' => 'sqlite',
             'database' => $sqlitePath,
             'prefix' => '',
         ]]);
 
-        Schema::connection('tempsqlite')->dropIfExists('song_library_cache');
-        Schema::connection('tempsqlite')->create('song_library_cache', function (Blueprint $table) {
+        Schema::connection($connectionName)->dropIfExists('song_library_cache');
+        Schema::connection($connectionName)->create('song_library_cache', function (Blueprint $table) {
             $table->bigIncrements('song_id')->comment('歌曲編號'); 
             $table->string('song_name')->nullable()->index()->comment('歌曲檔名');
             $table->string('song_simplified')->nullable()->index()->comment('歌曲簡體');
@@ -71,7 +71,7 @@ class ExportSqliteSongJob implements ShouldQueue
 
         $totalInserted = 0;
 
-        Song::with(['artists', 'categories'])->chunk(500, function ($songs) use (&$totalInserted) 
+        Song::with(['artists', 'categories'])->chunk(500, function ($songs) use (&$totalInserted, $connectionName)
         {
             $rows = [];
 
@@ -110,13 +110,13 @@ class ExportSqliteSongJob implements ShouldQueue
                 ];
             }
 
-            collect($rows)->chunk(1000)->each(function ($chunk) use (&$totalInserted) {
-                DB::connection('tempsqlite')->table('song_library_cache')->insert($chunk->toArray());
+            collect($rows)->chunk(1000)->each(function ($chunk) use (&$totalInserted, $connectionName) {
+                DB::connection($connectionName)->table('song_library_cache')->insert($chunk->toArray());
                 $totalInserted += $chunk->count();
             });
         });
 
-        $exporter = new SqliteExportService();
+        $exporter = new SqliteExportService($connectionName);
         $exporter->exportMultiple([
             'artists' => [
                 'modelClass' => Artist::class,
@@ -144,6 +144,7 @@ class ExportSqliteSongJob implements ShouldQueue
                 ],
             ],
         ]);
+        DB::purge($connectionName);
         SendSqliteFileJob::dispatch($sqlitePath);
     }
 }
diff --git a/app/Jobs/ExportSqliteUserJob.php b/app/Jobs/ExportSqliteUserJob.php
index bac8e24..ec93cbc 100644
--- a/app/Jobs/ExportSqliteUserJob.php
+++ b/app/Jobs/ExportSqliteUserJob.php
@@ -35,14 +35,14 @@ class ExportSqliteUserJob implements ShouldQueue
         if (!file_exists($sqlitePath)) {
             file_put_contents($sqlitePath, '');
         }
-
-        config(['database.connections.tempsqlite' => [
+        $connectionName = 'tempsqlite_' . md5($sqlitePath . microtime());
+        config(["database.connections.{$connectionName}" => [
             'driver' => 'sqlite',
             'database' => $sqlitePath,
             'prefix' => '',
         ]]);
 
-        $exporter = new SqliteExportService();
+        $exporter = new SqliteExportService($connectionName);
         $exporter->exportMultiple([
             // --- users ---
             'users' => [
@@ -199,6 +199,7 @@ class ExportSqliteUserJob implements ShouldQueue
                 ],
             ],
         ]);
+        DB::purge($connectionName);
         SendSqliteFileJob::dispatch($sqlitePath);
 
     }
diff --git a/app/Jobs/SendSqliteFileJob.php b/app/Jobs/SendSqliteFileJob.php
index 8bf6db1..0fadb24 100644
--- a/app/Jobs/SendSqliteFileJob.php
+++ b/app/Jobs/SendSqliteFileJob.php
@@ -45,11 +45,20 @@ class SendSqliteFileJob implements ShouldQueue
             $response = $client->upload('/api/upload-sqlite', ['file' => $path]);
 
             if ($response->successful()) {
-                Log::info("✅ 檔案 {$this->filename} 傳送成功");
+                Log::info("✅ $branch->name 檔案 {$path} 傳送成功");
             } else {
-                Log::error("❌ 傳送失敗：HTTP {$response->status()}");
+                Log::error("❌ $branch->name 傳送失敗：HTTP {$response->status()}");
                 Log::error($response->body());
             }
         }
+        if (file_exists($path)) {
+            sleep(1); // 小延遲避免未立即釋放
+
+            if (@unlink($path)) {
+                Log::info("🧹 Temp SQLite file deleted: {$path}");
+            } else {
+                Log::error("❌ 無法刪除 SQLite 檔案：{$path}");
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/app/Services/SqliteExportService.php b/app/Services/SqliteExportService.php
index f746fed..ea9290f 100644
--- a/app/Services/SqliteExportService.php
+++ b/app/Services/SqliteExportService.php
@@ -13,9 +13,9 @@ class SqliteExportService
 {
     protected string $connection;
 
-    public function __construct()
+    public function __construct(string $connection)
     {
-        $this->connection = 'tempsqlite';
+        $this->connection = $connection;
     }
 
     /**