diff --git a/include/libs/stream/streamState.h b/include/libs/stream/streamState.h
index b414d99c39..1824b9e340 100644
--- a/include/libs/stream/streamState.h
+++ b/include/libs/stream/streamState.h
@@ -65,7 +65,10 @@ int32_t       streamStateAbort(SStreamState* pState);
 void          streamStateDestroy(SStreamState* pState);
 
 typedef struct {
-  rocksdb_iterator_t* iter;
+  rocksdb_iterator_t*    iter;
+  rocksdb_snapshot_t*    snapshot;
+  rocksdb_readoptions_t* readOpt;
+  rocksdb_t*             db;
 
   TBC*    pCur;
   int64_t number;
diff --git a/source/libs/stream/src/streamState.c b/source/libs/stream/src/streamState.c
index aa1468fefd..2db4f2491b 100644
--- a/source/libs/stream/src/streamState.c
+++ b/source/libs/stream/src/streamState.c
@@ -669,6 +669,9 @@ void streamStateFreeCur(SStreamStateCur* pCur) {
   }
   qDebug("streamStateFreeCur");
   rocksdb_iter_destroy(pCur->iter);
+  rocksdb_release_snapshot(pCur->db, pCur->snapshot);
+  rocksdb_readoptions_destroy(pCur->readOpt);
+
   tdbTbcClose(pCur->pCur);
   taosMemoryFree(pCur);
 }
diff --git a/source/libs/stream/src/streamStateRocksdb.c b/source/libs/stream/src/streamStateRocksdb.c
index d9e754f2d0..a585a6bb51 100644
--- a/source/libs/stream/src/streamStateRocksdb.c
+++ b/source/libs/stream/src/streamStateRocksdb.c
@@ -13,7 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "query.h"
 #include "rocksdb/c.h"
 #include "streamBackendRocksdb.h"
 #include "tcommon.h"
@@ -302,7 +301,7 @@ int streamInitBackend(SStreamState* pState, char* path) {
   //  create the DB if it's not already present
   rocksdb_options_set_create_if_missing(opts, 1);
   rocksdb_options_set_create_missing_column_families(opts, 1);
-  rocksdb_options_set_write_buffer_size(opts, 8 << 20);
+  rocksdb_options_set_write_buffer_size(opts, 64 << 20);
 
   char* err = NULL;
   int   cfLen = sizeof(cfName) / sizeof(cfName[0]);
@@ -314,7 +313,7 @@ int streamInitBackend(SStreamState* pState, char* path) {
 
     rocksdb_cache_t* cache = rocksdb_cache_create_lru(128 << 20);
     rocksdb_block_based_options_set_block_cache(tableOpt, cache);
-    rocksdb_filterpolicy_t* filter = rocksdb_filterpolicy_create_bloom_full(10);
+    rocksdb_filterpolicy_t* filter = rocksdb_filterpolicy_create_bloom_full(15);
 
     rocksdb_block_based_options_set_filter_policy(tableOpt, filter);
     rocksdb_options_set_block_based_table_factory((rocksdb_options_t*)cfOpt[i], tableOpt);
@@ -408,10 +407,17 @@ bool streamStateIterSeekAndValid(rocksdb_iterator_t* iter, char* buf, size_t len
   valid = true;
   return valid;
 }
-rocksdb_iterator_t* streamStateIterCreate(SStreamState* pState, const char* cfName) {
+rocksdb_iterator_t* streamStateIterCreate(SStreamState* pState, const char* cfName, rocksdb_snapshot_t** snapshot,
+                                          rocksdb_readoptions_t** readOpt) {
   int idx = streamGetInit(cfName);
-  return rocksdb_create_iterator_cf(pState->pTdbState->rocksdb, pState->pTdbState->readOpts,
-                                    pState->pTdbState->pHandle[idx]);
+
+  *snapshot = (rocksdb_snapshot_t*)rocksdb_create_snapshot(pState->pTdbState->rocksdb);
+  *readOpt = (rocksdb_readoptions_t*)rocksdb_readoptions_create();
+
+  rocksdb_readoptions_set_snapshot(pState->pTdbState->readOpts, *snapshot);
+  rocksdb_readoptions_set_fill_cache(pState->pTdbState->readOpts, 0);
+
+  return rocksdb_create_iterator_cf(pState->pTdbState->rocksdb, *readOpt, pState->pTdbState->pHandle[idx]);
 }
 
 #define STREAM_STATE_PUT_ROCKSDB(pState, funcname, key, value, vLen)                                           \
@@ -617,8 +623,8 @@ SStreamStateCur* streamStateSessionSeekKeyCurrentPrev_rocksdb(SStreamState* pSta
     return NULL;
   }
   pCur->number = pState->number;
-
-  pCur->iter = streamStateIterCreate(pState, "sess");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "sess", &pCur->snapshot, &pCur->readOpt);
 
   char             buf[128] = {0};
   SStateSessionKey sKey = {.key = *key, .opNum = pState->number};
@@ -649,11 +655,8 @@ SStreamStateCur* streamStateSessionSeekKeyCurrentNext_rocksdb(SStreamState* pSta
   if (pCur == NULL) {
     return NULL;
   }
-
-  // pCur->iter =
-  //     rocksdb_create_iterator_cf(pState->pTdbState->rocksdb, pState->pTdbState->readOpts,
-  //     pState->pTdbState->pHandle[2]);
-  pCur->iter = streamStateIterCreate(pState, "sess");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "sess", &pCur->snapshot, &pCur->readOpt);
   pCur->number = pState->number;
 
   char buf[128] = {0};
@@ -684,7 +687,8 @@ SStreamStateCur* streamStateSessionSeekKeyNext_rocksdb(SStreamState* pState, con
   if (pCur == NULL) {
     return NULL;
   }
-  pCur->iter = streamStateIterCreate(pState, "sess");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "sess", &pCur->snapshot, &pCur->readOpt);
   pCur->number = pState->number;
 
   SStateSessionKey sKey = {.key = *key, .opNum = pState->number};
@@ -725,14 +729,13 @@ SStreamStateCur* streamStateGetCur_rocksdb(SStreamState* pState, const SWinKey*
   SStreamStateCur* pCur = taosMemoryCalloc(1, sizeof(SStreamStateCur));
 
   if (pCur == NULL) return NULL;
-  pCur->iter = streamStateIterCreate(pState, "default");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "default", &pCur->snapshot, &pCur->readOpt);
 
   SStateKey sKey = {.key = *key, .opNum = pState->number};
   char      buf[128] = {0};
   int       len = stateKeyEncode((void*)&sKey, buf);
 
-  // char      sKeyStr[128] = {0};
-  // stateKeyToString(&sKey, sKeyStr);
   rocksdb_iter_seek(pCur->iter, buf, len);
   if (rocksdb_iter_valid(pCur->iter)) {
     SStateKey curKey;
@@ -740,10 +743,6 @@ SStreamStateCur* streamStateGetCur_rocksdb(SStreamState* pState, const SWinKey*
     char*     keyStr = (char*)rocksdb_iter_key(pCur->iter, &kLen);
     stateKeyDecode((void*)&curKey, keyStr);
 
-    // char tKeyStr[128] = {0};
-    // stateKeyToString(&curKey, tKeyStr);
-    //  qWarn("streamStateGetCur_rocksdb-->src:%s, dst:%s", sKeyStr, tKeyStr);
-
     if (stateKeyCmpr(&sKey, sizeof(sKey), &curKey, sizeof(curKey)) == 0) {
       pCur->number = pState->number;
       return pCur;
@@ -787,7 +786,8 @@ SStreamStateCur* streamStateFillGetCur_rocksdb(SStreamState* pState, const SWinK
 
   if (pCur == NULL) return NULL;
 
-  pCur->iter = streamStateIterCreate(pState, "fill");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "fill", &pCur->snapshot, &pCur->readOpt);
 
   char buf[128] = {0};
   int  len = winKeyEncode((void*)key, buf);
@@ -898,7 +898,8 @@ SStreamStateCur* streamStateSeekKeyNext_rocksdb(SStreamState* pState, const SWin
     return NULL;
   }
   pCur->number = pState->number;
-  pCur->iter = streamStateIterCreate(pState, "default");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "default", &pCur->snapshot, &pCur->readOpt);
 
   SStateKey sKey = {.key = *key, .opNum = pState->number};
   char      buf[128] = {0};
@@ -929,7 +930,8 @@ SStreamStateCur* streamStateFillSeekKeyNext_rocksdb(SStreamState* pState, const
     return NULL;
   }
 
-  pCur->iter = streamStateIterCreate(pState, "fill");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "fill", &pCur->snapshot, &pCur->readOpt);
 
   char buf[128] = {0};
   int  len = winKeyEncode((void*)key, buf);
@@ -959,7 +961,8 @@ SStreamStateCur* streamStateFillSeekKeyPrev_rocksdb(SStreamState* pState, const
     return NULL;
   }
 
-  pCur->iter = streamStateIterCreate(pState, "fill");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "fill", &pCur->snapshot, &pCur->readOpt);
 
   char buf[128] = {0};
   int  len = winKeyEncode((void*)key, buf);
@@ -1003,7 +1006,8 @@ int32_t streamStateSessionGetKeyByRange_rocksdb(SStreamState* pState, const SSes
     return -1;
   }
   pCur->number = pState->number;
-  pCur->iter = streamStateIterCreate(pState, "sess");
+  pCur->db = pState->pTdbState->rocksdb;
+  pCur->iter = streamStateIterCreate(pState, "sess", &pCur->snapshot, &pCur->readOpt);
 
   SStateSessionKey sKey = {.key = *key, .opNum = pState->number};
   int32_t          c = 0;