diff --git a/src/main/java/com/divary/domain/logbase/logbook/service/LogBookService.java b/src/main/java/com/divary/domain/logbase/logbook/service/LogBookService.java
index d4f8ad7..8d5bd8f 100644
--- a/src/main/java/com/divary/domain/logbase/logbook/service/LogBookService.java
+++ b/src/main/java/com/divary/domain/logbase/logbook/service/LogBookService.java
@@ -58,11 +58,12 @@ public class LogBookService {
                 .build();
     }
 
-    @Transactional
+    @Transactional(readOnly = true)
     public List<LogBaseListResultDTO> getLogBooksByYearAndStatus(int year, SaveStatus status, Long userId) {
 
         List<LogBaseInfo> logBaseInfoList;
 
+
         Member member = memberService.findById(userId);
 
         if (status == null) {
@@ -84,7 +85,7 @@ public List<LogBaseListResultDTO> getLogBooksByYearAndStatus(int year, SaveStatu
 
     }//연도에 따라, 저장 상태(임시저장,완전저장)에 따라 로그북베이스정보 조회
 
-    @Transactional
+    @Transactional(readOnly = true)
     public List<LogBaseListResultDTO> getLogBooks(Long userId) {
 
         List<LogBaseInfo> logBaseInfoList = logBaseInfoRepository.findByMemberId(userId);
diff --git a/src/main/java/com/divary/domain/member/service/MemberServiceImpl.java b/src/main/java/com/divary/domain/member/service/MemberServiceImpl.java
index 1e1277d..f680897 100644
--- a/src/main/java/com/divary/domain/member/service/MemberServiceImpl.java
+++ b/src/main/java/com/divary/domain/member/service/MemberServiceImpl.java
@@ -39,6 +39,7 @@ public class MemberServiceImpl implements MemberService {
     private int gracePeriodDays;
 
     @Override
+    @Transactional(readOnly = true)
     public Member findMemberByEmail(String email) {
         return memberRepository.findByEmail(email).orElseThrow(()-> new BusinessException(ErrorCode.EMAIL_NOT_FOUND));
     }
@@ -52,18 +53,35 @@ public Member findById(Long id) {
     @Override
     @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#member.id", condition = "#member.id != null")
     public Member saveMember(Member member) {
+        // If member has an ID, it might be a detached entity from cache
+        // Re-fetch from DB to get managed entity with proper version
+        if (member.getId() != null) {
+            Member managedMember = memberRepository.findById(member.getId())
+                    .orElseThrow(() -> new BusinessException(ErrorCode.MEMBER_NOT_FOUND));
+
+            // Copy all fields from detached member to managed member
+            managedMember.setEmail(member.getEmail());
+            managedMember.setLevel(member.getLevel());
+            managedMember.setRole(member.getRole());
+            managedMember.setStatus(member.getStatus());
+            managedMember.setDeactivatedAt(member.getDeactivatedAt());
+
+            return managedMember; // JPA dirty checking will save this
+        }
+
+        // New entity - just save directly
         return memberRepository.save(member);
     }
 
 
 
-    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#userId")
+    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#userId", beforeInvocation = false)
     public void updateLevel(Long userId, MyPageLevelRequestDTO requestDTO) {
         Levels level = EnumValidator.validateEnum(Levels.class, requestDTO.getLevel().name());
 
-
         Member member = memberRepository.findById(userId).orElseThrow(()-> new BusinessException(ErrorCode.MEMBER_NOT_FOUND));
         member.setLevel(level);
+        // Cache evicted after successful update
     }
 
     @Override
@@ -83,7 +101,7 @@ public MyPageImageResponseDTO uploadLicense(MultipartFile image, Long userId) {
 
     @Override
     @Transactional
-    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#memberId")
+    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#memberId", beforeInvocation = false)
     public DeactivateResponse requestToDeleteMember(Long memberId) {
         Member member = memberRepository.findById(memberId).orElseThrow(()-> new BusinessException(ErrorCode.MEMBER_NOT_FOUND));
 
@@ -96,11 +114,12 @@ public DeactivateResponse requestToDeleteMember(Long memberId) {
                 .plusDays(gracePeriodDays);
 
         return new DeactivateResponse(scheduledDeletionAt);
+        // Cache evicted after successful update
     }
 
     @Override
     @Transactional
-    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#memberId")
+    @CacheEvict(cacheNames = com.divary.global.config.CacheConfig.CACHE_MEMBER_BY_ID, key = "#memberId", beforeInvocation = false)
     public void cancelDeleteMember(Long memberId) {
             Member member = memberRepository.findById(memberId).orElseThrow(() -> new BusinessException(ErrorCode.MEMBER_NOT_FOUND));
 
@@ -108,6 +127,7 @@ public void cancelDeleteMember(Long memberId) {
             if (member.getStatus() == Status.DEACTIVATED) {
                 member.cancelDeletion();
             }
+            // Cache evicted after successful update
     }
     @Override
     @Transactional