diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index 391b7f636d..ea50df1ac1 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -4588,6 +4588,8 @@ int32_t tsdbSetTableList2(STsdbReader* pReader, const void* pTableList, int32_t
   STableBlockScanInfo** p = NULL;
   int32_t               iter = 0;
 
+  (void)tsdbAcquireReader(pReader);
+
   while ((p = tSimpleHashIterate(pReader->status.pTableMap, p, &iter)) != NULL) {
     clearBlockScanInfo(*p);
   }
@@ -4595,12 +4597,14 @@ int32_t tsdbSetTableList2(STsdbReader* pReader, const void* pTableList, int32_t
   if (size < num) {
     code = ensureBlockScanInfoBuf(&pReader->blockInfoBuf, num);
     if (code) {
+      (void) tsdbReleaseReader(pReader);
       return code;
     }
 
     char* p1 = taosMemoryRealloc(pReader->status.uidList.tableUidList, sizeof(uint64_t) * num);
     if (p1 == NULL) {
-      return TSDB_CODE_OUT_OF_MEMORY;
+      (void) tsdbReleaseReader(pReader);
+      return terrno;
     }
 
     pReader->status.uidList.tableUidList = (uint64_t*)p1;
@@ -4617,16 +4621,19 @@ int32_t tsdbSetTableList2(STsdbReader* pReader, const void* pTableList, int32_t
     STableBlockScanInfo* pInfo = NULL;
     code = getPosInBlockInfoBuf(&pReader->blockInfoBuf, i, &pInfo);
     if (code != TSDB_CODE_SUCCESS) {
+      (void) tsdbReleaseReader(pReader);
       return code;
     }
 
     code = initTableBlockScanInfo(pInfo, pList[i].uid, pReader->status.pTableMap, pReader);
     if (code != TSDB_CODE_SUCCESS) {
+      (void) tsdbReleaseReader(pReader);
       return code;
     }
   }
 
-  return TDB_CODE_SUCCESS;
+  (void) tsdbReleaseReader(pReader);
+  return code;
 }
 
 uint64_t tsdbGetReaderMaxVersion2(STsdbReader* pReader) { return pReader->info.verRange.maxVer; }