diff --git a/bitbake/lib/prserv/db.py b/bitbake/lib/prserv/db.py
index 559935544a..86eafe338c 100644
--- a/bitbake/lib/prserv/db.py
+++ b/bitbake/lib/prserv/db.py
@@ -43,6 +43,10 @@ class PRTable(object):
                     continue
                 raise exc
 
+    def sync(self):
+        self.conn.commit()
+        self._execute("BEGIN EXCLUSIVE TRANSACTION")
+
     def _getValueHist(self, version, pkgarch, checksum):
         data=self._execute("SELECT value FROM %s WHERE version=? AND pkgarch=? AND checksum=?;" % self.table,
                            (version, pkgarch, checksum))
diff --git a/bitbake/lib/prserv/serv.py b/bitbake/lib/prserv/serv.py
index a9c7ed104c..7864594bb6 100644
--- a/bitbake/lib/prserv/serv.py
+++ b/bitbake/lib/prserv/serv.py
@@ -74,7 +74,7 @@ class PRServer(SimpleXMLRPCServer):
             except:
                 self.handle_error(request, client_address)
                 self.shutdown_request(request)
-
+                self.table.sync()
 
     def process_request(self, request, client_address):
         self.requestqueue.put((request, client_address))
@@ -120,6 +120,7 @@ class PRServer(SimpleXMLRPCServer):
         while not self.quit:
             self.handle_request()
 
+        self.table.sync()
         logger.info("PRServer: stopping...")
         self.server_close()
         return