At 11:15 AM 11/03/2006, you wrote:

>Helen Borrie:
>
>Thank you for your reply.
>
>When I run the application , there are no any database activities .
>That is , no event occur. So ,the application SHOULD wait , but it
>DOES NOT wait.

The application won't wait until you ask it to wait, by calling
isc_wait_for_event() on an event that you have previously registered
as an EPB by using ISC_EVENT_BLOCK.

./heLen