diff --git a/source/libs/tdb/src/db/tdbEnv.c b/source/libs/tdb/src/db/tdbEnv.c
index f668d3e047..daf74e07e3 100644
--- a/source/libs/tdb/src/db/tdbEnv.c
+++ b/source/libs/tdb/src/db/tdbEnv.c
@@ -23,6 +23,8 @@ struct STDbEnv {
   SPgFileList pgfList;    // SPgFile List
   SPgCache *  pPgCache;   // page cache
   struct {
+#define TDB_ENV_PGF_HASH_BUCKETS 17
+    SPgFileList buckets[TDB_ENV_PGF_HASH_BUCKETS];
   } pgfht;  // page file hash table;
   SJournal *pJournal;
 };
@@ -128,3 +130,12 @@ int tdbEnvCommit(TENV *pEnv) {
 }
 
 const char *tdbEnvGetRootDir(TENV *pEnv) { return pEnv->rootDir; }
+
+int tdbEnvRgstPageFile(TENV *pEnv, SPgFile *pPgFile) {
+  SPgFileList *pBucket;
+
+  pBucket = pEnv->pgfht.buckets + (0 % TDB_ENV_PGF_HASH_BUCKETS);  // TODO
+  TD_DLIST_APPEND_WITH_FIELD(pBucket, pPgFile, envHash);
+
+  return 0;
+}
\ No newline at end of file
diff --git a/source/libs/tdb/src/db/tdbPgFile.c b/source/libs/tdb/src/db/tdbPgFile.c
index 9e006aa2b4..b993b68635 100644
--- a/source/libs/tdb/src/db/tdbPgFile.c
+++ b/source/libs/tdb/src/db/tdbPgFile.c
@@ -34,7 +34,6 @@ int pgFileOpen(SPgFile **ppPgFile, const char *fname, TENV *pEnv) {
   ASSERT(pEnv != NULL);
 
   // init the handle
-  pPgFile->pEnv = pEnv;
   pPgFile->fname = (char *)(&(pPgFile[1]));
   memcpy(pPgFile->fname, fname, fnameLen);
   pPgFile->fname[fnameLen] = '\0';
@@ -48,7 +47,11 @@ int pgFileOpen(SPgFile **ppPgFile, const char *fname, TENV *pEnv) {
 
   tdbGnrtFileID(fname, pPgFile->fileid, false);
 
-  /* TODO */
+  /* TODO: other open operations */
+
+  // add the page file to the environment
+  tdbEnvRgstPageFile(pEnv, pPgFile);
+  pPgFile->pEnv = pEnv;
 
   *ppPgFile = pPgFile;
   return 0;
diff --git a/source/libs/tdb/src/inc/tdbEnv.h b/source/libs/tdb/src/inc/tdbEnv.h
index ef2eab87ef..4f9f32b8ea 100644
--- a/source/libs/tdb/src/inc/tdbEnv.h
+++ b/source/libs/tdb/src/inc/tdbEnv.h
@@ -23,6 +23,7 @@ extern "C" {
 const char* tdbEnvGetRootDir(TENV* pEnv);
 SPgFile*    tdbEnvGetPageFile(TENV* pEnv, const uint8_t fileid[]);
 SPgCache*   tdbEnvGetPgCache(TENV* pEnv);
+int         tdbEnvRgstPageFile(TENV* pEnv, SPgFile* pPgFile);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/tdb/src/inc/tdbInt.h b/source/libs/tdb/src/inc/tdbInt.h
index 782206a4aa..06674496a9 100644
--- a/source/libs/tdb/src/inc/tdbInt.h
+++ b/source/libs/tdb/src/inc/tdbInt.h
@@ -84,6 +84,7 @@ typedef pgsz_t pgoff_t;
 
 typedef TD_DLIST(STDb) STDbList;
 typedef TD_DLIST(SPgFile) SPgFileList;
+typedef TD_DLIST_NODE(SPgFile) SPgFileListNode;
 
 #define TERR_A(val, op, flag)  \
   do {                         \
diff --git a/source/libs/tdb/src/inc/tdbPgFile.h b/source/libs/tdb/src/inc/tdbPgFile.h
index d0b51442d1..90136ef886 100644
--- a/source/libs/tdb/src/inc/tdbPgFile.h
+++ b/source/libs/tdb/src/inc/tdbPgFile.h
@@ -33,10 +33,11 @@ typedef struct __attribute__((__packed__)) {
 TDB_STATIC_ASSERT(sizeof(SPgFileHdr) == TDB_PG_FILE_HDR_SIZE, "Page file header size if not 128");
 
 struct SPgFile {
-  TENV *  pEnv;                     // env containing this page file
-  char *  fname;                    // backend file name
-  uint8_t fileid[TDB_FILE_ID_LEN];  // file id
-  int     fd;
+  TENV *          pEnv;                     // env containing this page file
+  char *          fname;                    // backend file name
+  uint8_t         fileid[TDB_FILE_ID_LEN];  // file id
+  int             fd;
+  SPgFileListNode envHash;
   // TDB *   pDb;  // For a SPgFile for multiple databases, this is the <dbname, pgno> mapping DB.
 };