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Oracle 10g Advance Queue Enhancements

Next is an example showing the array dequeue with a PL/SQL block:

DECLARE
deq_cnt PLS_INTEGER;
deq_opt DBMS_AQ.dequeue_options_t;
mesg_props DBMS_AQ.message_properties_array_t;
parray OE.addr_nest_tab_typ;
msgidarray DBMS_AQ.msgid_array_t;

BEGIN

deq_cnt := DBMS_AQ.DEQUEUE_ARRAY (
queue_name      => 'IX.ORDERS_QUEUE',
dequeue_options => deq_opt,
array_size      => 20,
message_properties_array => mesg_props,
payload_array   => parray,
msgid_array     => msgidarray);
-- Process parray here ---
END;

In the above example, the message properties are returned into an array of type dbms_aq.message_properties_array_t.

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http://rampant-books.com/book_2003_2_oracle10g.htm

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