Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -3165,20 +3165,21 @@
 **
 ** This will release the write lock on the database file.  If there
 ** are no active cursors, it also releases the read lock.
 */
 int sqlite3BtreeCommitPhaseTwo(Btree *p){
-  BtShared *pBt = p->pBt;
 
+  if( p->inTrans==TRANS_NONE ) return SQLITE_OK;
   sqlite3BtreeEnter(p);
   btreeIntegrity(p);
 
   /* If the handle has a write-transaction open, commit the shared-btrees 
   ** transaction and set the shared state to TRANS_READ.
   */
   if( p->inTrans==TRANS_WRITE ){
     int rc;
+    BtShared *pBt = p->pBt;
     assert( pBt->inTransaction==TRANS_WRITE );
     assert( pBt->nTransaction>0 );
     rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
     if( rc!=SQLITE_OK ){
       sqlite3BtreeLeave(p);