diff --git a/client/internal/accessstat/access_stat.go b/client/internal/accessstat/access_stat.go
index 5ce1b6b..782c2cd 100644
--- a/client/internal/accessstat/access_stat.go
+++ b/client/internal/accessstat/access_stat.go
@@ -24,16 +24,23 @@ type ExitEvent struct {
 type AccessStat struct {
 	cfg   Config
 	done  chan any
-	stats []db.AddAccessStatEntry
+	stats map[entryKey]float64
 	lock  sync.Mutex
 	db    *db.DB
 }
 
+type entryKey struct {
+	objID   clitypes.ObjectID
+	pkgID   clitypes.PackageID
+	spaceID clitypes.UserSpaceID
+}
+
 func NewAccessStat(cfg Config, db *db.DB) *AccessStat {
 	return &AccessStat{
-		cfg:  cfg,
-		done: make(chan any),
-		db:   db,
+		cfg:   cfg,
+		done:  make(chan any),
+		stats: make(map[entryKey]float64),
+		db:    db,
 	}
 }
 
@@ -41,12 +48,12 @@ func (p *AccessStat) AddAccessCounter(objID clitypes.ObjectID, pkgID clitypes.Pa
 	p.lock.Lock()
 	defer p.lock.Unlock()
 
-	p.stats = append(p.stats, db.AddAccessStatEntry{
-		ObjectID:    objID,
-		PackageID:   pkgID,
-		UserSpaceID: spaceID,
-		Counter:     value,
-	})
+	key := entryKey{
+		objID:   objID,
+		pkgID:   pkgID,
+		spaceID: spaceID,
+	}
+	p.stats[key] += value
 }
 
 func (p *AccessStat) Start() *AccessStatEventChan {
@@ -73,12 +80,24 @@ func (p *AccessStat) Start() *AccessStatEventChan {
 				continue
 			}
 
-			err := db.DoTx10(p.db, p.db.Package().BatchAddPackageAccessStat, st)
+			var entries []db.AddAccessStatEntry
+			for k, v := range st {
+				entries = append(entries, db.AddAccessStatEntry{
+					ObjectID:    k.objID,
+					PackageID:   k.pkgID,
+					UserSpaceID: k.spaceID,
+					Counter:     v,
+				})
+			}
+			err := db.DoTx10(p.db, p.db.Package().BatchAddPackageAccessStat, entries)
+
 			if err != nil {
 				logger.Errorf("add all package access stat counter: %v", err)
 
 				p.lock.Lock()
-				p.stats = append(p.stats, st...)
+				for k, v := range st {
+					p.stats[k] += v
+				}
 				p.lock.Unlock()
 				continue
 			}
diff --git a/client/internal/db/package.go b/client/internal/db/package.go
index 8181e05..25864af 100644
--- a/client/internal/db/package.go
+++ b/client/internal/db/package.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/samber/lo"
 	"gitlink.org.cn/cloudream/jcs-pub/client/types"
 	"gorm.io/gorm"
 )
@@ -242,19 +243,19 @@ type AddAccessStatEntry struct {
 }
 
 func (db *PackageDB) BatchAddPackageAccessStat(ctx SQLContext, entries []AddAccessStatEntry) error {
-	pkgIDs := make([]types.PackageID, len(entries))
-	objIDs := make([]types.ObjectID, len(entries))
-	for i, e := range entries {
-		pkgIDs[i] = e.PackageID
-		objIDs[i] = e.ObjectID
+	pkgIDs := make(map[types.PackageID]bool)
+	objIDs := make(map[types.ObjectID]bool)
+	for _, e := range entries {
+		pkgIDs[e.PackageID] = true
+		objIDs[e.ObjectID] = true
 	}
 
-	avaiPkgIDs, err := db.Package().BatchTestPackageID(ctx, pkgIDs)
+	avaiPkgIDs, err := db.Package().BatchTestPackageID(ctx, lo.Keys(pkgIDs))
 	if err != nil {
 		return fmt.Errorf("batch test package id: %w", err)
 	}
 
-	avaiObjIDs, err := db.Object().BatchTestObjectID(ctx, objIDs)
+	avaiObjIDs, err := db.Object().BatchTestObjectID(ctx, lo.Keys(objIDs))
 	if err != nil {
 		return fmt.Errorf("batch test object id: %w", err)
 	}
diff --git a/client/internal/ticktock/change_redundancy.go b/client/internal/ticktock/change_redundancy.go
index 2e47888..c57e824 100644
--- a/client/internal/ticktock/change_redundancy.go
+++ b/client/internal/ticktock/change_redundancy.go
@@ -77,6 +77,11 @@ func (j *ChangeRedundancy) Execute(t *TickTock) {
 				return
 			}
 		}
+
+		// 如果执行超过两个小时，则停止
+		if time.Since(startTime) > time.Hour*2 {
+			break
+		}
 	}
 }
 
diff --git a/client/internal/ticktock/redundancy_recover.go b/client/internal/ticktock/redundancy_recover.go
index 426a840..14348ec 100644
--- a/client/internal/ticktock/redundancy_recover.go
+++ b/client/internal/ticktock/redundancy_recover.go
@@ -37,18 +37,39 @@ func (t *ChangeRedundancy) chooseRedundancy(ctx *changeRedundancyContext, obj cl
 			return &clitypes.DefaultECRedundancy, newStgs
 		}
 
-		return &clitypes.DefaultRepRedundancy, t.rechooseUserSpacesForRep(ctx, &clitypes.DefaultRepRedundancy)
+		newSpaces := t.rechooseUserSpacesForRep(ctx, &clitypes.DefaultRepRedundancy)
+		for _, s := range newSpaces {
+			if !obj.ContainsBlock(0, s.UserSpace.UserSpace.UserSpaceID) && !obj.ContainsPinned(s.UserSpace.UserSpace.UserSpaceID) {
+				return &clitypes.DefaultRepRedundancy, newSpaces
+			}
+		}
+
+		return nil, nil
 
 	case *clitypes.ECRedundancy:
 		if obj.Object.Size < ctx.ticktock.cfg.ECFileSizeThreshold {
 			return &clitypes.DefaultRepRedundancy, t.chooseNewUserSpacesForRep(ctx, &clitypes.DefaultRepRedundancy)
 		}
 
-		return &clitypes.DefaultECRedundancy, t.rechooseUserSpacesForEC(ctx, obj, &clitypes.DefaultECRedundancy)
+		newSpaces := t.rechooseUserSpacesForEC(ctx, obj, &clitypes.DefaultECRedundancy)
+		for i, s := range newSpaces {
+			if !obj.ContainsBlock(i, s.UserSpace.UserSpace.UserSpaceID) {
+				return &clitypes.DefaultECRedundancy, newSpaces
+			}
+		}
+
+		return nil, nil
 
 	case *clitypes.LRCRedundancy:
 		newLRCStgs := t.rechooseUserSpacesForLRC(ctx, obj, &clitypes.DefaultLRCRedundancy)
-		return &clitypes.DefaultLRCRedundancy, newLRCStgs
+
+		for i, s := range newLRCStgs {
+			if !obj.ContainsBlock(i, s.UserSpace.UserSpace.UserSpaceID) {
+				return &clitypes.DefaultLRCRedundancy, newLRCStgs
+			}
+		}
+
+		return nil, nil
 	}
 	return nil, nil
 }
diff --git a/client/types/types.go b/client/types/types.go
index 9e33d5a..deca657 100644
--- a/client/types/types.go
+++ b/client/types/types.go
@@ -219,6 +219,24 @@ func (o *ObjectDetail) GroupBlocks() []GrouppedObjectBlock {
 	return sort2.Sort(lo.Values(grps), func(l, r GrouppedObjectBlock) int { return l.Index - r.Index })
 }
 
+func (o *ObjectDetail) ContainsBlock(idx int, userSpaceID UserSpaceID) bool {
+	for _, block := range o.Blocks {
+		if block.Index == idx && block.UserSpaceID == userSpaceID {
+			return true
+		}
+	}
+	return false
+}
+
+func (o *ObjectDetail) ContainsPinned(userSpaceID UserSpaceID) bool {
+	for _, spaceID := range o.PinnedAt {
+		if spaceID == userSpaceID {
+			return true
+		}
+	}
+	return false
+}
+
 type UserSpaceDetail struct {
 	UserID       cortypes.UserID
 	UserSpace    UserSpace