oracle-open-corsur.diff

diff --git a/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php b/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php
index 21b06fa1..ee3af635 100644
--- a/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php
+++ b/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php
@@ -81,6 +81,11 @@ class OCI8Statement implements \IteratorAggregate, Statement
     private $boundValues = array();
 
     /**
+     * @var int|null
+     */
+    private $rowCount = null;
+
+    /**
      * Creates a new OCI8Statement that uses the given connection handle and SQL statement.
      *
      * @param resource                                  $dbh       The connection handle.
@@ -316,6 +321,10 @@ class OCI8Statement implements \IteratorAggregate, Statement
      */
     public function rowCount()
     {
-        return oci_num_rows($this->_sth);
+        if ($this->rowCount === null) {
+            $this->rowCount = oci_num_rows($this->_sth);
+            $this->closeCursor();
+        }
+        return $this->rowCount;
     }
 }