diff --git a/source/libs/tdb/src/db/tdbPgCache.c b/source/libs/tdb/src/db/tdbPgCache.c
index e6fef996cf1833434cf461e4658eab95c332ecec..1b000aa6d6f85dd983b0d60a3c2565990cfd815e 100644
--- a/source/libs/tdb/src/db/tdbPgCache.c
+++ b/source/libs/tdb/src/db/tdbPgCache.c
@@ -14,16 +14,6 @@
  */
 #include "tdbInt.h"
 
-typedef TD_DLIST_NODE(SPage) SPgListNode;
-struct SPage {
-  pgid_t      pgid;      // page id
-  frame_id_t  frameid;   // frame id
-  uint8_t *   pData;     // real data
-  SPgListNode freeNode;  // for SPgCache.freeList
-  SPgListNode pghtNode;  // for pght
-  SPgListNode lruNode;   // for LRU
-};
-
 typedef TD_DLIST(SPage) SPgList;
 struct SPgCache {
   TENV *  pEnv;  // TENV containing this page cache
diff --git a/source/libs/tdb/src/inc/tdbPgCache.h b/source/libs/tdb/src/inc/tdbPgCache.h
index 5bcac688af45ad13fc360a2426d7fc0219d15a35..c25ef27c1050dd83495adf4e50215a61810c5825 100644
--- a/source/libs/tdb/src/inc/tdbPgCache.h
+++ b/source/libs/tdb/src/inc/tdbPgCache.h
@@ -31,6 +31,15 @@ SPage *pgCacheFetch(SPgCache *pPgCache, pgid_t pgid);
 int    pgCacheRelease(SPage *pPage);
 
 // SPage
+typedef TD_DLIST_NODE(SPage) SPgListNode;
+struct SPage {
+  pgid_t      pgid;      // page id
+  frame_id_t  frameid;   // frame id
+  uint8_t *   pData;     // real data
+  SPgListNode freeNode;  // for SPgCache.freeList
+  SPgListNode pghtNode;  // for pght
+  SPgListNode lruNode;   // for LRU
+};
 
 #ifdef __cplusplus
 }