diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index 11c293af74ccba2ccab4739e85e30492e028d525..65b79ea588e893eb69a58319a34e848b27f6cb1d 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -62,10 +62,30 @@ static int tdbEncodeLength(u8 *pBuf, uint len);
 static int tdbBtCursorMoveToRoot(SBtCursor *pCur);
 static int tdbInitBtPage(SPage *pPage, SBtPage **ppBtPage);
 static int tdbCompareKeyAndCell(const void *pKey, int kLen, const void *pCell);
+static int tdbDefaultKeyCmprFn(const void *pKey1, int keyLen1, const void *pKey2, int keyLen2);
+
+int tdbBtreeOpen(SPgno rtPgno, int keyLen, int valLen, SPFile *pFile, FKeyComparator kcmpr, SBTree **ppBt) {
+  SBTree *pBt;
 
-int tdbBtreeOpen(SBTree **ppBt) {
   *ppBt = NULL;
-  /* TODO */
+
+  pBt = (SBTree *)calloc(1, sizeof(*pBt));
+  if (pBt == NULL) {
+    return -1;
+  }
+
+  // pBt->root
+  pBt->root = rtPgno;
+  // pBt->keyLen
+  pBt->keyLen = keyLen;
+  // pBt->valLen
+  pBt->valLen = valLen;
+  // pBt->pFile
+  pBt->pFile = pFile;
+  // pBt->kcmpr
+  pBt->kcmpr = kcmpr ? kcmpr : tdbDefaultKeyCmprFn;
+
+  *ppBt = pBt;
   return 0;
 }
 
@@ -230,4 +250,24 @@ static int tdbInitBtPage(SPage *pPage, SBtPage **ppBtPage) {
 static int tdbCompareKeyAndCell(const void *pKey, int kLen, const void *pCell) {
   /* TODO */
   return 0;
+}
+
+static int tdbDefaultKeyCmprFn(const void *pKey1, int keyLen1, const void *pKey2, int keyLen2) {
+  int mlen;
+  int cret;
+
+  ASSERT(keyLen1 > 0 && keyLen2 > 0 && pKey1 != NULL && pKey2 != NULL);
+
+  mlen = keyLen1 < keyLen2 ? keyLen1 : keyLen2;
+  cret = memcmp(pKey1, pKey2, mlen);
+  if (cret == 0) {
+    if (keyLen1 < keyLen2) {
+      cret = -1;
+    } else if (keyLen1 > keyLen2) {
+      cret = 1;
+    } else {
+      cret = 0;
+    }
+  }
+  return cret;
 }
\ No newline at end of file
diff --git a/source/libs/tdb/src/db/tdbDb.c b/source/libs/tdb/src/db/tdbDb.c
index d8978b7608065d633d4e4f8428e729cc0f3acabd..a9670e24dee6be6f04fbc3614c5b1700154b022e 100644
--- a/source/libs/tdb/src/db/tdbDb.c
+++ b/source/libs/tdb/src/db/tdbDb.c
@@ -60,10 +60,12 @@ int tdbDbOpen(const char *fname, int keyLen, int valLen, FKeyComparator keyCmprF
     if (ret < 0) {
       return -1;
     }
+  } else {
+    ASSERT(0);
   }
 
   // pDb->pBt
-  ret = tdbBtreeOpen(&(pDb->pBt));
+  ret = tdbBtreeOpen(pgno, keyLen, valLen, pFile, keyCmprFn, &(pDb->pBt));
   if (ret < 0) {
     return -1;
   }
@@ -252,23 +254,4 @@ int tdbInsert(TDB *pDb, const void *pKey, int nKey, const void *pData, int nData
   return 0;
 }
 
-static int tdbDefaultKeyCmprFn(int keyLen1, const void *pKey1, int keyLen2, const void *pKey2) {
-  int mlen;
-  int cret;
-
-  ASSERT(keyLen1 > 0 && keyLen2 > 0 && pKey1 != NULL && pKey2 != NULL);
-
-  mlen = keyLen1 < keyLen2 ? keyLen1 : keyLen2;
-  cret = memcmp(pKey1, pKey2, mlen);
-  if (cret == 0) {
-    if (keyLen1 < keyLen2) {
-      cret = -1;
-    } else if (keyLen1 > keyLen2) {
-      cret = 1;
-    } else {
-      cret = 0;
-    }
-  }
-  return cret;
-}
 #endif
\ No newline at end of file
diff --git a/source/libs/tdb/src/db/tdbPFile.c b/source/libs/tdb/src/db/tdbPFile.c
index 42ea7769e7208fecd5895cec6a9825c4a2de8624..31047807bf83a3c2cb88dc15f0a4f2c55c4ce228 100644
--- a/source/libs/tdb/src/db/tdbPFile.c
+++ b/source/libs/tdb/src/db/tdbPFile.c
@@ -34,6 +34,7 @@ int tdbPFileOpen(SPCache *pCache, const char *fileName, SPFile **ppFile) {
   SPFile * pFile;
   int      fsize;
   int      zsize;
+  int      ret;
 
   *ppFile = NULL;
 
@@ -66,6 +67,11 @@ int tdbPFileOpen(SPCache *pCache, const char *fileName, SPFile **ppFile) {
     return -1;
   }
 
+  ret = tdbGnrtFileID(pFile->dbFileName, pFile->fid, false);
+  if (ret < 0) {
+    return -1;
+  }
+
   pFile->jfd = -1;
 
   *ppFile = pFile;
diff --git a/source/libs/tdb/src/inc/tdbBtree.h b/source/libs/tdb/src/inc/tdbBtree.h
index 0961ac1664bd16a8b968480c551ec4f0a8c96a98..745a336e8925b53eda75535dfcffabbb27eddebb 100644
--- a/source/libs/tdb/src/inc/tdbBtree.h
+++ b/source/libs/tdb/src/inc/tdbBtree.h
@@ -23,7 +23,7 @@ extern "C" {
 typedef struct SBTree    SBTree;
 typedef struct SBtCursor SBtCursor;
 
-int tdbBtreeOpen(SBTree **ppBt);
+int tdbBtreeOpen(SPgno rtPgno, int keyLen, int valLen, SPFile *pFile, FKeyComparator kcmpr, SBTree **ppBt);
 int tdbBtreeClose(SBTree *pBt);
 int tdbBtCursorInsert(SBtCursor *pCur, const void *pKey, int kLen, const void *pVal, int vLen);
 
diff --git a/source/libs/tdb/src/inc/tdbInt.h b/source/libs/tdb/src/inc/tdbInt.h
index 8f4e32bcd90066e6cd56782fd31a9a65f1525b77..1e66e6ca403910d394f205edd1f06454d85d8f9e 100644
--- a/source/libs/tdb/src/inc/tdbInt.h
+++ b/source/libs/tdb/src/inc/tdbInt.h
@@ -131,12 +131,12 @@ typedef int (*FKeyComparator)(const void *pKey1, int kLen1, const void *pKey2, i
 
 #include "tdbUtil.h"
 
-#include "tdbBtree.h"
-
 #include "tdbPCache.h"
 
 #include "tdbPFile.h"
 
+#include "tdbBtree.h"
+
 #include "tdbEnv.h"
 
 #include "tdbDb.h"