diff --git a/mittest/logservice/archiveservice/fake_archive_piece_mgr.cpp b/mittest/logservice/archiveservice/fake_archive_piece_mgr.cpp
index 5707860a32..b3b85be988 100644
--- a/mittest/logservice/archiveservice/fake_archive_piece_mgr.cpp
+++ b/mittest/logservice/archiveservice/fake_archive_piece_mgr.cpp
@@ -111,6 +111,7 @@ int FakeArchivePieceContext::init(const share::ObLSID &id, FakeRounds *rounds)
   } else {
     id_ = id;
     rounds_ = rounds;
+    archive_dest_.set("file:///data/1/");
     is_inited_ = true;
   }
   return ret;
@@ -146,6 +147,7 @@ int FakeArchivePieceContext::get_round_(const share::SCN &start_scn)
 int FakeArchivePieceContext::get_round_range_()
 {
   int ret = OB_SUCCESS;
+  dest_id_ = 1;
   min_round_id_ = rounds_->array_.at(0).round_id_;
   max_round_id_ = rounds_->array_.at(rounds_->array_.count() - 1).round_id_;
   return ret;
diff --git a/mittest/logservice/archiveservice/test_restore_archive_log.cpp b/mittest/logservice/archiveservice/test_restore_archive_log.cpp
index 5db7615ab3..20a84b1735 100644
--- a/mittest/logservice/archiveservice/test_restore_archive_log.cpp
+++ b/mittest/logservice/archiveservice/test_restore_archive_log.cpp
@@ -11,6 +11,7 @@
  */
 
 #include "lib/ob_errno.h"
+#include "logservice/palf/log_define.h"
 #include "share/ob_errno.h"
 #include "share/ob_ls_id.h"
 #include <cstdint>
@@ -218,7 +219,7 @@ TEST(FakeArchivePieceContext, get_piece)
   lsn = LSN(10 * 64 * ONE_MB);
   CLOG_LOG(INFO, "print get piece 8", K(lsn));
   ret = archive_context.get_piece(scn, lsn, dest_id, round_id, piece_id, cur_file_id, offset, max_lsn, to_newest);
-  EXPECT_EQ(OB_ITER_END, ret);
+  EXPECT_EQ(OB_ERR_OUT_OF_LOWER_BOUND, ret);
 
   archive_context.reset_locate_info();
   log_ts = 1010;
diff --git a/src/logservice/archiveservice/ob_archive_fetcher.cpp b/src/logservice/archiveservice/ob_archive_fetcher.cpp
index e897269164..0718534c1e 100644
--- a/src/logservice/archiveservice/ob_archive_fetcher.cpp
+++ b/src/logservice/archiveservice/ob_archive_fetcher.cpp
@@ -175,6 +175,7 @@ int ObArchiveFetcher::set_archive_info(
     const ObCompressorType type,
     const bool need_encrypt)
 {
+  UNUSED(unit_size);
   int ret = OB_SUCCESS;
   if (OB_UNLIKELY(interval_us <= 0 || !genesis_scn.is_valid() || base_piece_id < 1 || unit_size <= 0)) {
     ret = OB_INVALID_ARGUMENT;
@@ -186,7 +187,6 @@ int ObArchiveFetcher::set_archive_info(
     UNUSED(need_encrypt);
     genesis_scn_ = genesis_scn;
     base_piece_id_ = base_piece_id;
-    unit_size_ = unit_size;
     unit_size_ = 1;
   }
   return ret;
diff --git a/src/logservice/restoreservice/ob_log_archive_piece_mgr.cpp b/src/logservice/restoreservice/ob_log_archive_piece_mgr.cpp
index 8868b87302..2e1af13dcc 100644
--- a/src/logservice/restoreservice/ob_log_archive_piece_mgr.cpp
+++ b/src/logservice/restoreservice/ob_log_archive_piece_mgr.cpp
@@ -208,6 +208,19 @@ int ObLogArchivePieceContext::init(const share::ObLSID &id,
   return ret;
 }
 
+bool ObLogArchivePieceContext::is_valid() const
+{
+  return is_inited_
+    && locate_round_
+    && id_.is_valid()
+    && dest_id_ > 0
+    && min_round_id_ > 0
+    && max_round_id_ >= min_round_id_
+    && round_context_.is_valid()
+    && inner_piece_context_.is_valid()
+    && archive_dest_.is_valid();
+}
+
 int ObLogArchivePieceContext::get_piece(const SCN &pre_scn,
     const palf::LSN &start_lsn,
     int64_t &dest_id,
@@ -219,6 +232,11 @@ int ObLogArchivePieceContext::get_piece(const SCN &pre_scn,
     bool &to_newest)
 {
   int ret = OB_SUCCESS;
+  // if piece context not valid, reset it
+  if (! is_valid()) {
+    reset_locate_info();
+  }
+
   file_id = cal_archive_file_id_(start_lsn);
   if (OB_UNLIKELY(! pre_scn.is_valid() || ! start_lsn.is_valid())) {
     ret = OB_INVALID_ARGUMENT;
@@ -485,7 +503,7 @@ int ObLogArchivePieceContext::switch_round_if_need_(const SCN &scn, const palf::
   int ret = OB_SUCCESS;
   RoundOp op = RoundOp::NONE;
   RoundContext pre_round = round_context_;
-  check_if_switch_round_(lsn, op);
+  check_if_switch_round_(scn, lsn, op);
   switch (op) {
     case RoundOp::NONE:
       break;
@@ -512,7 +530,7 @@ int ObLogArchivePieceContext::switch_round_if_need_(const SCN &scn, const palf::
   return ret;
 }
 
-void ObLogArchivePieceContext::check_if_switch_round_(const palf::LSN &lsn, RoundOp &op)
+void ObLogArchivePieceContext::check_if_switch_round_(const share::SCN &scn, const palf::LSN &lsn, RoundOp &op)
 {
   op = RoundOp::NONE;
   if (min_round_id_ == 0 || max_round_id_ == 0
@@ -525,7 +543,7 @@ void ObLogArchivePieceContext::check_if_switch_round_(const palf::LSN &lsn, Roun
     op = RoundOp::BACKWARD;
   } else if (need_forward_round_(lsn)/*确定当前round日志全部小于需要消费日志, 并且当前round小于最大round id*/) {
     op = RoundOp::FORWARD;
-  } else if (need_load_round_info_(lsn)/*当前round能访问到的最大piece已经STOP, 并且当前round还是ACTIVE的*/) {
+  } else if (need_load_round_info_(scn, lsn)/*当前round能访问到的最大piece已经STOP, 并且当前round还是ACTIVE的*/) {
     op = RoundOp::LOAD;
   }
 
@@ -607,7 +625,7 @@ bool ObLogArchivePieceContext::need_forward_round_(const palf::LSN &lsn) const
 // 前提: 当前round_context状态非STOP
 // 1. 当前round_context信息是无效的
 // 2. 当前round最大piece不包含需要消费的日志
-bool ObLogArchivePieceContext::need_load_round_info_(const palf::LSN &lsn) const
+bool ObLogArchivePieceContext::need_load_round_info_(const share::SCN &scn, const palf::LSN &lsn) const
 {
   bool bret = false;
   if (round_context_.is_in_stop_state()) {
@@ -620,6 +638,8 @@ bool ObLogArchivePieceContext::need_load_round_info_(const palf::LSN &lsn) const
       && inner_piece_context_.is_fronze_()
       && lsn >= inner_piece_context_.max_lsn_in_piece_) {
     bret = true;
+  } else {
+    bret = cal_piece_id_(scn) > round_context_.max_piece_id_;
   }
   return bret;
 }
diff --git a/src/logservice/restoreservice/ob_log_archive_piece_mgr.h b/src/logservice/restoreservice/ob_log_archive_piece_mgr.h
index f9fd0adde1..1f0bca05ac 100644
--- a/src/logservice/restoreservice/ob_log_archive_piece_mgr.h
+++ b/src/logservice/restoreservice/ob_log_archive_piece_mgr.h
@@ -52,6 +52,8 @@ public:
 
   void reset();
 
+  bool is_valid() const;
+
   int get_piece(const share::SCN &pre_scn,
       const palf::LSN &start_lsn,
       int64_t &dest_id,
@@ -230,11 +232,11 @@ private:
   // 如果round不满足数据需求, 支持切round
   int switch_round_if_need_(const share::SCN &scn, const palf::LSN &lsn);
 
-  void check_if_switch_round_(const palf::LSN &lsn, RoundOp &op);
+  void check_if_switch_round_(const share::SCN &scn, const palf::LSN &lsn, RoundOp &op);
   bool is_max_round_done_(const palf::LSN &lsn) const;
   bool need_backward_round_(const palf::LSN &lsn) const;
   bool need_forward_round_(const palf::LSN &lsn) const;
-  bool need_load_round_info_(const palf::LSN &lsn) const;
+  bool need_load_round_info_(const share::SCN &scn, const palf::LSN &lsn) const;
 
   // 获取指定round元信息
   virtual int load_round_(const int64_t round_id, RoundContext &round_context, bool &exist);
diff --git a/src/logservice/restoreservice/ob_remote_data_generator.cpp b/src/logservice/restoreservice/ob_remote_data_generator.cpp
index a93ee01830..ca59c5c619 100644
--- a/src/logservice/restoreservice/ob_remote_data_generator.cpp
+++ b/src/logservice/restoreservice/ob_remote_data_generator.cpp
@@ -399,6 +399,7 @@ RawPathDataGenerator::RawPathDataGenerator(const uint64_t tenant_id,
   RemoteDataGenerator(tenant_id, id, start_lsn, end_lsn, end_scn),
   array_(array),
   data_len_(0),
+  file_id_(0),
   base_lsn_(),
   index_(piece_index),
   min_file_id_(min_file_id),
diff --git a/src/logservice/restoreservice/ob_remote_log_source.cpp b/src/logservice/restoreservice/ob_remote_log_source.cpp
index 3b5245c53a..65ab6adcf4 100644
--- a/src/logservice/restoreservice/ob_remote_log_source.cpp
+++ b/src/logservice/restoreservice/ob_remote_log_source.cpp
@@ -222,6 +222,8 @@ int ObRemoteLocationParent::update_locate_info(ObRemoteLogParent &source)
   } else if (dst.root_path_ != root_path_) {
     // parent changed
     CLOG_LOG(WARN, "parent changed, just skip", K(dst), KPC(this));
+  } else if (OB_UNLIKELY(! dst.piece_context_.is_valid())) {
+    CLOG_LOG(TRACE, "piece_context not valid, just skip", K(dst));
   } else if (OB_FAIL(dst.piece_context_.deep_copy_to(piece_context_))) {
     CLOG_LOG(WARN, "deep copy to piece context failed", K(ret));
     piece_context_.reset_locate_info();