diff --git a/src/main/java/com/kamco/cd/kamcoback/common/download/DownloadExecutor.java b/src/main/java/com/kamco/cd/kamcoback/common/download/DownloadExecutor.java
deleted file mode 100644
index edb80175..00000000
--- a/src/main/java/com/kamco/cd/kamcoback/common/download/DownloadExecutor.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package com.kamco.cd.kamcoback.common.download;
-
-import com.kamco.cd.kamcoback.common.download.dto.DownloadSpec;
-import com.kamco.cd.kamcoback.common.utils.UserUtil;
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.file.Files;
-import lombok.RequiredArgsConstructor;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
-import org.springframework.stereotype.Service;
-import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody;
-
-@Service
-@RequiredArgsConstructor
-public class DownloadExecutor {
-
-  private final UserUtil userUtil;
-
-  public ResponseEntity<StreamingResponseBody> stream(DownloadSpec spec) throws IOException {
-
-    if (!Files.isReadable(spec.filePath())) {
-      return ResponseEntity.notFound().build();
-    }
-
-    StreamingResponseBody body =
-        os -> {
-          try (InputStream in = Files.newInputStream(spec.filePath())) {
-            in.transferTo(os);
-            os.flush();
-          } catch (Exception e) {
-            // 고용량은 중간 끊김 흔하니까 throw 금지
-          }
-        };
-
-    String fileName =
-        spec.downloadName() != null
-            ? spec.downloadName()
-            : spec.filePath().getFileName().toString();
-
-    return ResponseEntity.ok()
-        .contentType(
-            spec.contentType() != null ? spec.contentType() : MediaType.APPLICATION_OCTET_STREAM)
-        .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + fileName + "\"")
-        .body(body);
-  }
-}
diff --git a/src/main/java/com/kamco/cd/kamcoback/common/download/dto/DownloadSpec.java b/src/main/java/com/kamco/cd/kamcoback/common/download/dto/DownloadSpec.java
deleted file mode 100644
index bc3b5570..00000000
--- a/src/main/java/com/kamco/cd/kamcoback/common/download/dto/DownloadSpec.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.kamco.cd.kamcoback.common.download.dto;
-
-import java.nio.file.Path;
-import java.util.UUID;
-import org.springframework.http.MediaType;
-
-public record DownloadSpec(
-    UUID uuid, // 다운로드 식별(로그/정책용)
-    Path filePath, // 실제 파일 경로
-    String downloadName, // 사용자에게 보일 파일명
-    MediaType contentType // 보통 OCTET_STREAM
-    ) {}
diff --git a/src/main/java/com/kamco/cd/kamcoback/inference/InferenceResultApiController.java b/src/main/java/com/kamco/cd/kamcoback/inference/InferenceResultApiController.java
index f1c09000..30fa5080 100644
--- a/src/main/java/com/kamco/cd/kamcoback/inference/InferenceResultApiController.java
+++ b/src/main/java/com/kamco/cd/kamcoback/inference/InferenceResultApiController.java
@@ -1,7 +1,5 @@
 package com.kamco.cd.kamcoback.inference;
 
-import com.kamco.cd.kamcoback.common.download.DownloadExecutor;
-import com.kamco.cd.kamcoback.common.download.dto.DownloadSpec;
 import com.kamco.cd.kamcoback.common.exception.CustomApiException;
 import com.kamco.cd.kamcoback.config.api.ApiResponseDto;
 import com.kamco.cd.kamcoback.inference.dto.InferenceDetailDto;
@@ -28,6 +26,7 @@ import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.time.LocalDate;
 import java.util.List;
@@ -35,7 +34,9 @@ import java.util.Map;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.log4j.Log4j2;
+import org.springframework.core.io.Resource;
 import org.springframework.data.domain.Page;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.DeleteMapping;
@@ -46,7 +47,6 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody;
 
 @Tag(name = "추론관리", description = "추론관리 API")
 @Log4j2
@@ -58,7 +58,6 @@ public class InferenceResultApiController {
   private final InferenceResultService inferenceResultService;
   private final MapSheetMngService mapSheetMngService;
   private final ModelMngService modelMngService;
-  private final DownloadExecutor downloadExecutor;
 
   @Operation(summary = "추론관리 목록", description = "어드민 홈 > 추론관리 > 추론관리 > 추론관리 목록")
   @ApiResponses(
@@ -359,7 +358,7 @@ public class InferenceResultApiController {
         @ApiResponse(responseCode = "500", description = "서버 오류", content = @Content)
       })
   @GetMapping(value = "/download/{uuid}")
-  public ResponseEntity<StreamingResponseBody> download(
+  public ResponseEntity<Resource> download(
       @Parameter(example = "69c4e56c-e0bf-4742-9225-bba9aae39052") @PathVariable UUID uuid)
       throws IOException {
 
@@ -375,10 +374,18 @@ public class InferenceResultApiController {
     }
 
     Path zipPath = Path.of(path);
+    long size = Files.size(zipPath);
+    Resource resource = new org.springframework.core.io.UrlResource(zipPath.toUri());
+
     log.info("shp download request path = {}", path);
 
-    return downloadExecutor.stream(
-        new DownloadSpec(uuid, zipPath, uid + ".zip", MediaType.APPLICATION_OCTET_STREAM));
+    return ResponseEntity.ok()
+        .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + uid + ".zip" + "\"")
+        .header(HttpHeaders.ACCEPT_RANGES, "bytes")
+        .header("X-Accel-Buffering", "no") // nginx/ingress 버퍼링 방지 힌트
+        .contentType(MediaType.APPLICATION_OCTET_STREAM)
+        .contentLength(size)
+        .body(resource);
   }
 
   @Operation(summary = "shp 파일 다운로드 이력 조회", description = "추론관리 분석결과 shp 파일 다운로드 이력 조회")
diff --git a/src/main/java/com/kamco/cd/kamcoback/label/LabelAllocateApiController.java b/src/main/java/com/kamco/cd/kamcoback/label/LabelAllocateApiController.java
index 1dc82963..fdbe6e2d 100644
--- a/src/main/java/com/kamco/cd/kamcoback/label/LabelAllocateApiController.java
+++ b/src/main/java/com/kamco/cd/kamcoback/label/LabelAllocateApiController.java
@@ -1,6 +1,5 @@
 package com.kamco.cd.kamcoback.label;
 
-import com.kamco.cd.kamcoback.common.download.DownloadExecutor;
 import com.kamco.cd.kamcoback.config.api.ApiResponseDto;
 import com.kamco.cd.kamcoback.label.dto.LabelAllocateDto;
 import com.kamco.cd.kamcoback.label.dto.LabelAllocateDto.InferenceDetail;
@@ -31,6 +30,7 @@ import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.coyote.BadRequestException;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.core.io.Resource;
 import org.springframework.data.domain.Page;
@@ -53,7 +53,6 @@ import org.springframework.web.bind.annotation.RestController;
 public class LabelAllocateApiController {
 
   private final LabelAllocateService labelAllocateService;
-  private final DownloadExecutor downloadExecutor;
 
   @Value("${file.dataset-response}")
   private String responsePath;
@@ -386,25 +385,22 @@ public class LabelAllocateApiController {
       @Parameter(example = "6d8d49dc-0c9d-4124-adc7-b9ca610cc394") @PathVariable UUID uuid)
       throws IOException {
 
-    //    if (!labelAllocateService.isDownloadable(uuid)) {
-    //      throw new BadRequestException();
-    //    }
+    if (!labelAllocateService.isDownloadable(uuid)) {
+      throw new BadRequestException();
+    }
 
     String uid = labelAllocateService.findLearnUid(uuid);
     Path zipPath = Paths.get(responsePath).resolve(uid + ".zip");
     long size = Files.size(zipPath);
     Resource resource = new org.springframework.core.io.UrlResource(zipPath.toUri());
+
     return ResponseEntity.ok()
-        .header(
-            HttpHeaders.CONTENT_DISPOSITION,
-            "attachment; filename=\"" + zipPath.getFileName().toString() + "\"")
+        .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + uid + ".zip" + "\"")
         .header(HttpHeaders.ACCEPT_RANGES, "bytes")
         .header("X-Accel-Buffering", "no") // nginx/ingress 버퍼링 방지 힌트
         .contentType(MediaType.APPLICATION_OCTET_STREAM)
         .contentLength(size)
         .body(resource);
-    //    return downloadExecutor.stream(
-    //        new DownloadSpec(uuid, zipPath, uid + ".zip", MediaType.APPLICATION_OCTET_STREAM));
   }
 
   @Operation(summary = "라벨 파일 다운로드 이력 조회", description = "라벨 파일 다운로드 이력 조회")
diff --git a/src/main/java/com/kamco/cd/kamcoback/label/service/LabelAllocateService.java b/src/main/java/com/kamco/cd/kamcoback/label/service/LabelAllocateService.java
index 25f9d5ad..72892a6a 100644
--- a/src/main/java/com/kamco/cd/kamcoback/label/service/LabelAllocateService.java
+++ b/src/main/java/com/kamco/cd/kamcoback/label/service/LabelAllocateService.java
@@ -31,7 +31,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 @Slf4j
 @Service
-@Transactional
+@Transactional(readOnly = true)
 @RequiredArgsConstructor
 public class LabelAllocateService {