diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 98c9932..362da58 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -141,6 +141,7 @@
 	{
 		// oracle must parse the query before it is run. All of the actions with
 		// the query are based on the statement id returned by ociparse
+		$this->stmt_id = FALSE;
 		$this->_set_stmt_id($sql);
 		ocisetprefetch($this->stmt_id, 1000);
 		return @ociexecute($this->stmt_id, $this->_commit);