diff --git a/src/main/java/com/example/FixLog/domain/post/Post.java b/src/main/java/com/example/FixLog/domain/post/Post.java
index e0db596..b5ba702 100644
--- a/src/main/java/com/example/FixLog/domain/post/Post.java
+++ b/src/main/java/com/example/FixLog/domain/post/Post.java
@@ -33,32 +33,35 @@ public class Post {
     private String coverImage;
 
     @Lob // 텍스트가 길어질 수 있는 필드에 사용
-    @Column(nullable = false)
+    @Column(columnDefinition = "TEXT", nullable = false)
     private String problem;
 
     @Lob
-    @Column(nullable = false)
+    @Column(columnDefinition = "TEXT", nullable = false)
     private String errorMessage;
 
     @Lob
-    @Column(nullable = false)
+    @Column(columnDefinition = "TEXT", nullable = false)
     private String environment;
 
     @Lob
-    @Column(nullable = false)
+    @Column(columnDefinition = "TEXT", nullable = false)
     private String reproduceCode;
 
     @Lob
-    @Column(nullable = false)
+    @Column(columnDefinition = "TEXT", nullable = false)
     private String solutionCode;
 
     @Lob
+    @Column(columnDefinition = "TEXT")
     private String causeAnalysis;
 
     @Lob
+    @Column(columnDefinition = "TEXT")
     private String referenceLink;
 
     @Lob
+    @Column(columnDefinition = "TEXT")
     private String extraContent;
 
     @Column(nullable = false)
diff --git a/src/main/java/com/example/FixLog/domain/tag/Tag.java b/src/main/java/com/example/FixLog/domain/tag/Tag.java
index c4297d4..31f290c 100644
--- a/src/main/java/com/example/FixLog/domain/tag/Tag.java
+++ b/src/main/java/com/example/FixLog/domain/tag/Tag.java
@@ -18,7 +18,7 @@ public class Tag {
     @Enumerated(EnumType.STRING)
     private TagCategory tagCategory;
 
-    @Column(length = 20, nullable = false)
+    @Column(length = 50, nullable = false)
     private String tagName;
 
     private String tagInfo;
diff --git a/src/main/java/com/example/FixLog/mock/PostMockDataInitializer.java b/src/main/java/com/example/FixLog/mock/PostMockDataInitializer.java
index d361cc9..1c602be 100644
--- a/src/main/java/com/example/FixLog/mock/PostMockDataInitializer.java
+++ b/src/main/java/com/example/FixLog/mock/PostMockDataInitializer.java
@@ -53,12 +53,12 @@ public void run(String... args) {
                 .collect(Collectors.toMap(Tag::getTagName, tag -> tag));
 
         List<String[]> config = List.of(
-                new String[]{"백엔드", "스프링부트", "자바", "NullPointerException", "500 Internal Server Error"},
-                new String[]{"프론트엔드", "리액트", "자바스크립트", "Cannot read property of undefined", "상태(state) 업데이트 누락"},
-                new String[]{"머신러닝", "케라스", "파이썬", "OutOfMemoryError", "HTTP 에러"},
-                new String[]{"백엔드", "노드", "JSON", "CORS 정책 오류", "404 Not Found"},
-                new String[]{"프론트엔드", "넥스트", "CSS", "스타일 깨짐", "렌더링 무한 루프"},
-                new String[]{"머신러닝", "사이킷런", "R", "ClassNotFoundException", "Permission Error"}
+                new String[]{"backend", "spring-boot", "java", "null-pointer-exception", "500-error"},
+                new String[]{"frontend", "react", "javascript", "undefined-property", "state-missing"},
+                new String[]{"machine-learning", "keras", "python", "out-of-memory", "http-error"},
+                new String[]{"backend", "node.js", "json", "cors-error", "404-error"},
+                new String[]{"frontend", "next.js", "css", "style-break", "render-loop"},
+                new String[]{"machine-learning", "scikit-learn", "r", "class-not-found", "permission-error"}
         );
 
         for (int i = 0; i < config.size(); i++) {
diff --git a/src/main/java/com/example/FixLog/repository/post/PostRepositoryImpl.java b/src/main/java/com/example/FixLog/repository/post/PostRepositoryImpl.java
index e8aedad..8b6dd28 100644
--- a/src/main/java/com/example/FixLog/repository/post/PostRepositoryImpl.java
+++ b/src/main/java/com/example/FixLog/repository/post/PostRepositoryImpl.java
@@ -39,14 +39,19 @@ public Page<SearchPostDto> searchByKeywordAndTags(String keyword, List<String> t
 
         // 2. 태그 조건 (AND 조건)
         if (tags != null && !tags.isEmpty()) {
+            List<String> sanitizedTags = tags.stream()
+                    .filter(tag -> tag != null && !tag.trim().isEmpty())  // null/빈값 제거
+                    .map(String::trim)                                    // 공백 제거
+                    .toList();
+
             NumberExpression<Long> count = postTag.tagId.tagId.count();
 
             JPQLQuery<Long> subQuery = queryFactory
                     .select(postTag.postId.postId)
                     .from(postTag)
-                    .where(postTag.tagId.tagName.in(tags))
+                    .where(postTag.tagId.tagName.in(sanitizedTags))       // 이미 소문자면 lower() 생략 가능
                     .groupBy(postTag.postId.postId)
-                    .having(count.eq((long) tags.size()));
+                    .having(count.eq((long) sanitizedTags.size()));
 
             builder.and(post.postId.in(subQuery));
         }
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 471b627..b63eb06 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -25,7 +25,7 @@ spring.application.name=FixLog
 ## JWT
 #jwt.secret=${JWT_KEY}
 #
-## Spring Security 디버깅 로그
+## Spring Security
 #logging.level.org.springframework.security=DEBUG
 
 ##### [PROD] #####
@@ -50,4 +50,5 @@ jwt.secret=${JWT_KEY}
 
 logging.level.root=INFO
 logging.level.com.example.FixLog=DEBUG
+logging.level.org.springframework.web.servlet.DispatcherServlet=DEBUG
 logging.file.name=logs/app.log