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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <title>Description of the illustration tdpii507.eps</title> </head> <body> <p>This illustration shows a messaging environment that includes the following Oracle databases:</p> <ul> <li> <p><code>ii1.example.com</code></p> </li> <li> <p><code>ii2.example.com</code></p> </li> </ul> <p>The <code>ii1.example.com</code> database has the following components:</p> <ul> <li> <p>The <code>oe.orders</code> table.</p> </li> <li> <p>A trigger named <code>enqueue_orders</code> that fires when row is inserted into the oe.orders table. The trigger enqueues messages of <code>order_id_date</code> type based on the insert into the <code>streams_queue</code> queue.</p> </li> <li> <p>A propagation named <code>send_orders</code> that sends messages from the local <code>streams_queue</code> queue to the <code>streams_queue</code> queue at <code>ii2.example.com</code>.</p> </li> </ul> <p>The <code>ii2.example.com</code> database has the following components:</p> <ul> <li> <p>The <code>streams_queue</code> queue.</p> </li> <li> <p>A messaging client/subscriber named <code>strmadmin</code>. When the strmadmin messaging client/subscriber is invoked, it uses the <code>dequeue_orders</code> PL/SQL procedure to dequeue and process the messages in the <code>streams_queue</code> queue.</p> </li> </ul> </body> </html>
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