Advanced Queuing - Oracle

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tkaqdocp.sql: Examples of Operational Interfaces execute dbms_lock.sleep(100); Rem ================================================================== Rem Illustrating Dequeue Modes/Methods Rem ================================================================== connect WS/WS; set serveroutput on; Rem Dequeue all booked orders for West_Shipping execute BOLADM.shipping_bookedorder_deq('West_Shipping', DBMS_AQ.REMOVE); commit; / connect ES/ES; set serveroutput on; Rem Browse all booked orders for East_Shipping execute BOLADM.shipping_bookedorder_deq('East_Shipping', DBMS_AQ.BROWSE); Rem Dequeue all rush order titles for East_Shipping execute BOLADM.get_rushtitles('East_Shipping'); commit; / Rem Dequeue all remaining booked orders (normal order) for East_Shipping execute BOLADM.shipping_bookedorder_deq('East_Shipping', DBMS_AQ.REMOVE); commit; / connect OS/OS; set serveroutput on; Rem Dequeue all international North American orders for Overseas_Shipping execute BOLADM.get_northamerican_orders; commit; / Rem Dequeue rest of the booked orders for Overseas_Shipping execute BOLADM.shipping_bookedorder_deq('Overseas_Shipping', DBMS_AQ.REMOVE); commit; / C-30 Oracle9i Application Developer’s Guide - Advanced Queuing
tkaqdocp.sql: Examples of Operational Interfaces Rem ================================================================== Rem Illustrating Enhanced Propagation Capabilities Rem ================================================================== connect OE/OE; set serveroutput on; Rem Rem Get propagation schedule information & statistics Rem Rem get averages select avg_time, avg_number, avg_size from user_queue_schedules; Rem get totals select total_time, total_number, total_bytes from user_queue_schedules; Rem get status information of schedule (present only when active) select process_name, session_id, instance, schedule_disabled from user_queue_schedules; Rem get information about last and next execution select last_run_date, last_run_time, next_run_date, next_run_time from user_queue_schedules; Rem get last error information if any select failures, last_error_msg, last_error_date, last_error_time from user_queue_schedules; Rem disable propagation schedule for booked orders execute dbms_aqadm.disable_propagation_schedule(queue_name => 'OE_bookedorders_ que'); execute dbms_lock.sleep(30); select schedule_disabled from user_queue_schedules; Rem alter propagation schedule for booked orders to execute every Rem 15 mins (900 seconds) for a window duration of 300 seconds begin dbms_aqadm.alter_propagation_schedule( queue_name => 'OE_bookedorders_que', duration => 300, next_time => 'SYSDATE + 900/86400', latency => 25); Scripts for Implementing BooksOnLine C-31
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Oracle9i Application Developer’s
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Contents Send Us Your Comments ....
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Enhanced Propagation Scheduling Cap
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Creating AQ Administrators and User
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Support for Statistics Views ......
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Removing an Alias from the LDAP Ser
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Priority and Ordering of Messages..
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Sending a Message Using a Queue Sen
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Specifying JMS Message Property as
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Gateway Agent .....................
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Enqueue of Messages for remote subs
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Send Us Your Comments Oracle9i Appl
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Preface This reference describes fe
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Chapter 9, "Administrative Interfac
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Conventions To download free releas
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Convention Meaning Example [] Brack
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Convention Meaning Example Special
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http://www.oracle.com/accessibility
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What’s New in Advanced Queuing? T
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The servlet parses the content of t
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Dequeue enhancements: Using the deq
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1 Introduction to Oracle Advanced Q
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Figure 1-1 Integrated Application E
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General Features of Advanced Queuin
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Support for Statistics Views Struct
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XMLType Payloads General Features o
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Figure 1-6 Architecture for Perform
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Correlation Identifiers Enqueue Fea
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Sender Identification Enqueue Featu
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Retries with Delays Dequeue Feature
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Third-Party Support Elements of Adv
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Recipient Elements of Advanced Queu
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Demos You can start a maximum of 10
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Table 1-1 Demos Demo and Locations
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The following basic components are
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Table 2-1 Type Name (type_name) Par
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Syntax TYPE aq$_subscriber_list_t I
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Table 2-4 Nonpersistent Queues Queu
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Table 2-7 lists the enumerated cons
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INIT.ORA Parameter File Considerati
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3 AQ Programmatic Environments This
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Table 3-1 (Cont.) AQ Programmatic E
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Examples Using Visual Basic (OO4O)
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Advanced Queuing Examples For JDK 1
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Oracle JMS Extensions Using Oracle
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Using the AQ XML Servlet to Access
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Table 3-2 Comparison of AQ Programm
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Alter a Subscriber DBMS_AQADM.alter
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Comparing AQ Programmatic Environme
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4 Managing AQ This chapter discusse
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Access to AQ Object Types Oracle 8.
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LNOCI Applications Queue Table Expo
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Importing Queue Table Data Creating
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Restrictions on Queue Management ig
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Propagation Issues Propagation Issu
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Propagation Issues all these circum
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Migrating To and From 8.0 Oracle 8.
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Security with 8.0-Style Queues Acce
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5 Performance and Scalability This
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Propagation Tuning Tips same segmen
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General Questions 6 Frequently Aske
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General Questions How do you associ
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General Questions 2 - Ex subscriber
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Messaging Gateway Questions mgwadm.
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Messaging Gateway Questions 3. Veri
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Propagation Questions Messaging Gat
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Transformation Questions Messaging
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Messaging Gateway Questions user. E
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Internet Access Questions Why doesn
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Performance Questions How do I use
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Installation Questions 2. Set up us
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Installation Questions NOTE: In Ora
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7 Modeling and Design This chapter
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Basic Queuing Basic Queuing Illustr
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Modeling Queue Entities Consumers A
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Multiconsumer Dequeuing of the Same
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Modeling Queue Entities produced by
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Modeling Queue Entities list of sub
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Modeling Queue Entities application
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Modeling Queue Entities whether the
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8 A Sample Application Using AQ In
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Structured Payloads General Feature
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For details on XMlType operations r
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end; Nonpersistent Queues END LOOP;
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OCIAttrGet((dvoid *)subscrhp, OCI_H
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printf("Initialization successful\n
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* End of file tkaqdocn.c */ Visual
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AQQueueTableProperty mqt_prop; AQQu
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Support for Statistics Views } Inte
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Enqueue Features cannot have the sa
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compatible => '8.1', \ primary_inst
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Enqueue Features set oraaq = OraDat
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{ AQSession aq_sess; AQQueue booked
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Time Specification: Delay } { /* Cr
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Set OraOrder = OraDatabase.CreateOr
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ack_order_queue_name := 'WS.WS_back
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} Message Grouping } catch (Excepti
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EXECUTE BOLADM.same_order_enq(’My
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dbms_aq.enqueue('WS.ws_bookedorders
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JOHN DASH 100 EXPRESS STREET REDWOO
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Dequeue Features messages with the
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* Dequeue the orders: */ CONNECT ES
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} Multiple Recipients catch (Except
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Dequeue Features init.ora parameter
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deq_cust_data BOLADM.customer_typ;
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Modes of Dequeuing if MsgIsDequeued
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Dequeue Features that the remove de
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Dequeue Features /* Dequeue all int
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} } } db_conn.commit(); Dequeue Fea
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Retry with Delay Interval Dequeue F
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* Create an AQ Session: */ aq_sess
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Dequeue Features DBMS_AQADM.START_Q
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Dequeue Features The following exam
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} Dequeue Features backorders_q = a
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Dequeue Features Eastern Region Sh
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END; queue_name => 'OS.OS_bookedord
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Dequeue Features Scenario In the cu
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no_message EXCEPTION; pragma EXCEPT
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* Get owner, queue where message is
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Dequeue Using the AQ XML Servlet As
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ub4 fedex; ub4 air; ub4 ground; };
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); printf("Initialization successfu
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sb4 errcode = 0; Asynchronous Notif
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Asynchronous Notifications BEGIN --
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Propagation Scenario Enhanced Pro
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PL/SQL (DBMS_AQADM Package): Exampl
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* Check if the schedule has been en
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length is a variable of type NUMBER
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Propagation Features retry time is
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Propagation Features Scenario In th
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import javax.servlet.*; import java
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dbms_aqadm.schedule_propagation('OE
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9 Administrative Interface This cha
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Use Case Model: Administrative Inte
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OR optional information add table d
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Creating a Queue Table Visual Basi
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dbms_aqadm.create_queue_table ( que
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q_table = aq_sess.createQueueTable
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Creating a Queue Table [Set Storage
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Altering a Queue Table PL/SQL (DBMS
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Dropping a Queue Table Figure 9-4 D
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force => TRUE); Java (JDBC): Droppi
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OR OR OR default optional informati
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Creating a queue within a queue tab
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} Creating a multiconsumer queue wi
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Creating a Nonpersistent Queue mess
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See Also: Table 9-1 for a list of a
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Dropping a Queue Figure 9-8 Droppin
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Java (JDBC): Dropping a Queue /* Dr
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Creating a Transformation Usage Not
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Modifying a Transformation Figure 9
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Applying a Transformation Figure 9-
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Dropping a Transformation PL/SQL (D
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Starting a Queue Syntax See Chapter
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Stopping a Queue Figure 9-14 Stoppi
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Java (JDBC): Stopping a Queue /* St
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Granting System Privilege See Chapt
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Revoking System Privilege Figure 9-
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Granting Queue Privilege Figure 9-1
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Revoking Queue Privilege Figure 9-1
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} AQQueue queue; /* Get the queue o
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Purpose Adds a default subscriber t
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* Where the transformation was crea
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agent1 = new AQAgent("East_Shipping
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See Also: Table 9-1 for a list of a
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’AQ.MSG_MAP1’); /* Alter the su
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Purpose Remove a default subscriber
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Scheduling a Queue Propagation Figu
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PL/SQL (DBMS_AQADM): Scheduling a Q
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Unscheduling a Queue Propagation Fi
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} AQAgent agent1; AQAgent agent2; /
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Note: The sys.aq$_message_types tab
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Altering a Propagation Schedule Fig
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eached by the database link another
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Enabling a Propagation Schedule Exa
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Disabling a Propagation Schedule Fi
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} AQQueue queue; AQAgent agent1; AQ
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Purpose Registers an agent for AQ I
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Purpose Alters an agent registered
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PL/SQL: Example not provided. VB (
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Enabling Database Access Examples S
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VB (OO4O): Example not provided. J
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Java (JDBC): Oracle9i Supplied Java
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Removing an Alias from the LDAP Ser
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10 Administrative Interface: Views
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Selecting All Queue Tables in Datab
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Selecting User Queue Tables Figure
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Selecting All Queues in Database Fi
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Selecting All Propagation Schedules
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Purpose This view describes the cur
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Selecting Queues for Which User Has
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Selecting Queues for Which User Has
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Selecting Messages in Queue Table F
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Table 10-8 (Cont.) View for Selecti
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Selecting Queue Tables in User Sche
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Selecting Queues In User Schema Fig
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Selecting Propagation Schedules in
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Purpose Table 10-11 USER_QUEUE_SCHE
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Selecting Queue Subscribers Figure
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Selecting Queue Subscribers and The
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Selecting the Number of Messages in
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Selecting the Number of Messages in
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Selecting the AQ Agents Registered
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Table 10-17 USER_TRANSFORMATIONS Co
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Table 10-19 DBA_TRANSFORMATIONS Col
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11 Operational Interface: Basic Ope
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Table 11-1 (Cont.) Use Case Model:
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Purpose Adds a message to the speci
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See Also: Purpose To specify the op
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Enqueuing a Message [Specify Messag
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Enqueuing a Message [Add Payload] S
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DBMS_AQ.ENQUEUE(queue_name => ’ms
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} Enqueuing a Message [Add Payload]
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} raw_payload.setStream(b_array, b_
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Listening to One or More Single-Con
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Listen to Single-Consumer Queue (Ti
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} Listening to One or More Single-C
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OCIEnvInit( &envhp, (ub4) OCI_DEFAU
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} Listening to One or More Single-C
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Listening to One or More Multiconsu
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Listening to One or More Multiconsu
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} Listening to One or More Multicon
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OCIEnv *envhp; OCIServer *srvhp; OC
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} printf("MESSAGE for :- \n"); GetA
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Usage Notes Search criteria and deq
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Dequeuing a Message from a Single-C
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Dequeuing a Message from a Single-C
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' of "RELATIVE_MSG_ID" Q.Navigation
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See Also: Dequeuing a Message from
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Registering for Notification Figure
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PL/SQL (DBMS_AQ Package): Not avail
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Registering for Notification [Speci
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Posting for Subscriber Notification
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Adding an Agent to the LDAP Server
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Removing an Agent from the LDAP Ser
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12 Creating Applications Using JMS
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J2EE Compliance General Features of
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JMS Connection and Session General
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General Features of JMS To connect
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General Features of JMS A JMS Conne
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General Features of JMS acknowledg
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General Features of JMS There are t
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alter() - alters a queue or topic G
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General Features of JMS CREATE USER
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General Features of JMS backed_orde
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General Features of JMS /* Check in
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General Features of JMS JMS time st
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Table 12-1 Message Header Fields Me
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General Features of JMS Stream Mess
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General Features of JMS Object Mess
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JMS_OracleDelay JMS_OracleOriginalM
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public String getRegion() { return
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eturn quantity; } } /* * BolBook -
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} this.custid = custid; this.name =
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Queue Sender JMS Point-to-Point Mod
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try { JMS Point-to-Point Model Feat
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JMS Publish-Subscribe Model Feature
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Durable Subscriber JMS Publish-Subs
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Example Code JMS Publish-Subscribe
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JMS Publish-Subscribe Model Feature
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TopicReceiver } System.out.println(
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Topic Browser } obj_message = (Obje
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} TopicBrowser browser; Topic topic
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JMS Message Producer Features Examp
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Time Specification - Delay } "OE_bo
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JMS Message Producer Features Examp
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JMS Message Producer Features The m
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} sender.send(obj_message); } catch
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} ObjectMessage obj_message; BolCus
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Message Navigation in Receive } new
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int new_orders = 1; try { JMS Messa
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JMS Message Consumer Features This
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JMS Message Consumer Features The m
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} } try { /* cast to JMS Object Mes
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{ } /* cast to JMS Object Message *
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JMS Message Consumer Features The m
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} } JMS Propagation 3. Receive expi
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JMS Propagation oe_ws from database
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* Create local subscriber - for pri
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JMS Propagation When a schedule is
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Maximum number of bytes propagated
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Message Transformation with JMS AQ
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Message Transformation with JMS AQ
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} Message Transformation with JMS A
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} Message Transformation with JMS A
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13 JMS Administrative Interface: Ba
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Use Case Model: JMS Administrative
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Registering a Queue/Topic Connectio
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Unregistering a Queue/Topic Connect
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Unregistering a Queue/Topic Connect
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Getting a Queue Connection Factory
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Getting a Queue Connection Factory
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Getting a Topic Connection Factory
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Getting a Topic Connection Factory
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Getting a Queue/Topic Connection Fa
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Getting a Queue/Topic in LDAP Figur
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See Also: Table 13-1 for a list of
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Getting a Queue Table Figure 13-15
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Specifying Destination Properties F
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Creating a Queue—Point-to-Point F
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Creating a Topic—Publish-Subscrib
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Granting System Privileges Figure 1
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Purpose Grant a topic privilege in
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Revoking Topic Privileges—Publish
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Purpose Grant a queue privilege in
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Purpose Revoke queue privilege in t
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Starting a Destination Usage Notes
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Purpose Stop a destination. Stoppin
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Syntax See Java (JDBC): Oracle9i Su
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TopicSession t_sess; Topic topic; (
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Enabling a Propagation Schedule Fig
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Altering a Propagation Schedule Fig
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Disabling a Propagation Schedule Fi
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14 JMS Operational Interface: Basic
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Creating a Queue Connection with Us
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See Also: Purpose Create a queue co
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Creating a Queue Connection with an
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Creating a Queue Session Figure 14-
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Sending a Message Using a Queue Sen
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Sending Messages Using a Queue Send
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Creating a Queue Browser for Queues
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Browsing Messages Using a Queue Bro
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Creating a Queue Receiver for Queue
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Creating a Queue Receiver for Queue
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Creating a Queue Connection with an
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Use Case Model: JMS Operational Int
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Usage Notes Not applicable. Creatin
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Creating a Topic Connection with De
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Creating a Topic Connection with an
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Syntax Java (JDBC): Oracle9i Suppli
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See Also: Publishing a Message Usin
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Publishing a Message Using a Topic
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See Also: Publishing a Message Usin
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Creating a Durable Subscriber for a
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See Also: Purpose Create a durable
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Example Creating a Durable Subscrib
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Creating a Remote Subscriber for To
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Creating a Remote Subscriber for To
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Example Creating a Remote Subscribe
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Unsubscribing a Durable Subscriptio
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Unsubscribing a Durable Subscriptio
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Creating a Topic Receiver for a Top
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See Also: Creating a Topic Receiver
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Creating a Topic Browser for Topics
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See Also: Creating a Topic Browser
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Browsing Messages Using a Topic Bro
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Use Case Model: JMS Operational Int
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Starting a JMS Connection Figure 16
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Usage Notes Not applicable. Committ
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See Also: Purpose Rollback All Oper
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Getting the Underlying OracleOCICon
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Creating a Map Message Usage Notes
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Creating a Stream Message Figure 16
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Creating a Text Message Refer to Ja
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Creating a JMS Message Figure 16-12
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Creating an ADT Message Syntax See
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Specifying Message Correlation ID F
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Specifying JMS Message Property Fig
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Setting Default TimeToLive for All
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Setting Default Priority for All Me
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Usage Notes Not applicable. Creatin
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Receiving a Message Synchronously U
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Specifying the Navigation Mode for
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Specifying a Message Listener to Re
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Specifying a Message Listener to Re
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Getting the Correlation ID of a Mes
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Purpose Get the Message ID of a Mes
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Getting the JMS Message Property Fi
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See Also: Purpose Get the Message P
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Purpose Get the Message Property as
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Getting the JMS Message Property as
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See Also: Purpose Get the Message P
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Closing a Message Producer Figure 1
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Stopping a JMS Connection Figure 16
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See Java (JDBC): Oracle9i Supplied
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Usage Notes Not applicable. Getting
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See Also: Purpose Get the Error Mes
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Printing the Stack Trace for the JM
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Getting the Exception Listener Usag
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Setting the Ping Period for the Exc
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Getting the Ping Period for the Exc
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17 Internet Access to Advanced Queu
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Figure 17-2 Architecture for Perfor
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SOAP Method Invocation The Internet
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Notifications from the server to th
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Message Payloads AQ supports messag
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Required elements are shown in bold
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scott 100 NEW URGENT EAST 1001
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scott 1111 Mary 5000 1996-01-01
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1 1 toyota john scott aqus
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scott The Internet Data Access P
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The Internet Data Access Presentati
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The Internet Data Access Presenta
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Rollback Request Example A rollback
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. The Internet Data Access Presenta
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Example A FAULT message has the fol
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IDAP Schema 'http://schemas.xmlsoap
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SOAP and AQ XML Schemas
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Deploying the AQ XML Servlet The AQ
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User Authentication $ORACLE_HOME/li
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Deploying the AQ XML Servlet Mappin
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} Hashtable env = new Hashtable(5,
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Deploying the AQ XML Servlet 2. Cre
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Using HTTP to Access the AQ XML Ser
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Using HTTP to Access the AQ XML Ser
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Figure 17-3 HTTP Advanced Queuing P
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. Map the AQ agent to a database us
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} db_drv.getCacheSize(10); this.set
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Customizing the AQ Servlet The void
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} this.setAQDataSource(db_drv); /*
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18 Messaging Gateway Messaging Gate
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Messaging Gateway Architecture For
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Gateway Agent Propagation Processin
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1. Loading Database Objects into th
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Modifying tnsnames.ora: Example MGW
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Setup Verification Creating a Messa
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Working with Messaging Gateway desc
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The following command shuts down th
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end; Working with Messaging Gateway
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Working with Messaging Gateway The
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The propagation type (inbound or ou
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end; Working with Messaging Gateway
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Working with Messaging Gateway inst
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Converting Messages Converting Mess
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Messaging Gateway Canonical Types C
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Converting Messages An AQ payload o
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Converting Messages The MQSeries fi
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Converting Messages Advanced Queuin
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Table 18-4 Messaging Gateway Names
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Table 18-5 MQSeries Header Default
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queue_name => ’AQ_book_orders’,
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Converting Messages Propagating Inb
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File Contents Initialization Parame
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Format: set CLASSPATH= The mgw.ora
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A Oracle Advanced Queuing by Exampl
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- Managing Propagation From One Que
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Creating a Queue Table and Queue of
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Creating an Java AQ Session Creatin
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Creating a Queue and Start Enqueue/
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Enqueuing and Dequeuing Of Messages
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EXEC SQL CONNECT :user; /* On an or
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{ OCIEnv *envhp; OCIServer *srvhp;
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public static void AQObjectPayloadT
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this.empNo = empNo; } ////// implem
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} /* Enqueue a message in test_queu
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void sql_error(msg) char *msg; { EX
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} Enqueuing and Dequeuing of RAW Ty
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} /* Get a handle to a queue - aq_q
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AQRawPayload raw_payload; AQEnqueue
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DBMS_AQ.ENQUEUE(queue_name => ’pr
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} } else m_property.setPriority(3);
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and remove RED from queue: */ DECLA
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char subject[30]; /* components of
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* Bind the host variable ’message
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int main() { OCIEnv *envhp; OCIServ
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ecipients DBMS_AQ.aq$_recipient_lis
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WHEN no_messages THEN DBMS_OUTPUT.P
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dequeue_options.navigation := DBMS_
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SELECT t.user_data.data INTO lob_lo
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Connection db_conn = null; AQEnqueu
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} Thread.sleep(30000); // dequeue m
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END; BEGIN DBMS_AQADM.SCHEDULE_PROP
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queue_name => ’q1def’, destinat
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EXECUTE DBMS_AQADM.DROP_QUEUE ( que
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* XA open string */ char xaoinfo[]
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Deploying AQ with XA envhp = xaoEnv
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#include #endif #include static v
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ub4 buflen; OCIInitialize((ub4) OCI
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struct message { OCINumber id; OCIS
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AQ and Memory Usage OCIHandleAlloc(
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OCIInd null_adt; OCIInd null_id; OC
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(ub4) OCI_ATTR_SERVER, (OCIError *)
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LNOCIError *errhp; LNOCISvcCtx *svc
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OCIAttrSet((dvoid *)svchp, (ub4)OCI
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B Oracle JMS Interfaces, Classes, a
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Table B-1 (Cont.) Interfaces, Class
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Oracle JMSClasses (part 1) Figure B
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Oracle JMS Classes (part 2) Figure
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See Also: "Interface - javax.jms.M
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See Also: "Interface - javax.jms.Q
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Oracle JMS Classes (part 10 continu
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readBoolean() readByte() readBytes(
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See Also: "Oracle JMSClasses (part
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setDouble(String, double) setFloat(
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See Also: "Oracle JMS Classes (par
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close() commit() createBytesMessage
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writeString(String) Interface - jav
Page 1109 and 1110: See Also: "Oracle JMS Classes (par
Page 1111 and 1112: getErrorCode() getLinkedException()
Page 1113 and 1114: getNavigationMode() receiveNoData()
Page 1115 and 1116: getAdtPayload() setAdtPayload(Custo
Page 1117 and 1118: STATE_WAITING TRANSACTIONAL WAIT_FO
Page 1119 and 1120: INFINITE NORMAL_QUEUE > AQjmsDestin
Page 1121 and 1122: See Also: "Oracle JMS Classes (par
Page 1123 and 1124: Class - oracle.jms.AQjmsSession > o
Page 1125 and 1126: Interfaces, Classes, and Exceptions
Page 1127 and 1128: Exception oracle.jms.AQjmsMessageEO
Page 1129 and 1130: setPrimaryInstance(int inst) setSec
Page 1131 and 1132: C Scripts for Implementing BooksOnL
Page 1133 and 1134: tkaqdoca.sql: Script to Create User
Page 1147 and 1148: connect CS/CS tkaqdocd.sql: Example
Page 1149 and 1150: wait_time INTEGER := 120; no_messag
Page 1151 and 1152: tkaqdoce.sql: Operational Examples
Page 1153 and 1154: tkaqdocp.sql: Examples of Operation
Page 1155 and 1156: egin end; dopt.consumer_name := con
Page 1157 and 1158: end; / show errors; tkaqdocp.sql: E
Page 1159: grant execute on shipping_bookedord
Page 1163 and 1164: tkaqdocp.sql: Examples of Operation
Page 1165 and 1166: end; / show errors; tkaqdocp.sql: E
Page 1167 and 1168: tkaqdocc.sql: Clean-Up Script tkaqd
Page 1169 and 1170: D JMS and AQ XML Servlet Error Mess
Page 1171 and 1172: JMS Error Messages Cause: An attemp
Page 1173 and 1174: JMS Error Messages Action: The vali
Page 1175 and 1176: JMS Error Messages Cause: An attemp
Page 1177 and 1178: JMS-163 Message not Writeable Cause
Page 1179 and 1180: JMS Error Messages Action: Specify
Page 1181 and 1182: JMS Error Messages Cause: There is
Page 1183 and 1184: AQ XML Servlet Error Messages JMS-4
Page 1185 and 1186: Action: The valid navigation modes
Page 1187 and 1188: Action: Specify a valid data source
Page 1189 and 1190: E Unified Modeling Language Diagram
Page 1191 and 1192: Use Case Diagrams As shown in Figur
Page 1193 and 1194: equires that you first create a te
Page 1195 and 1196: Figure E-9 Required and Optional Op
Page 1197 and 1198: State Diagrams Figure E-11 A Class
Page 1199 and 1200: A access control. See system-level
Page 1201 and 1202: features, 8-58 message navigation,
Page 1203 and 1204: Interface - javax.jms.TopicSession,
Page 1205 and 1206: operational interface basic operati
Page 1207 and 1208: R basic, 7-3 basic, one producer, o
Page 1209 and 1210: V view, 10-1 attributes, 10-1 views
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Advanced Queuing - Oracle

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