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Oracle

Advanced QueuingNaresh Kumar YNaresh Kumar Y

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AgendaAgenda

IntroductionIntroduction Environment setupEnvironment setup Packages to manage AQsPackages to manage AQs

PayloadPayload Queue tableQueue table Create QueueCreate Queue Grant privilegesGrant privileges essage propertiesessage properties En!eue optionsEn!eue options En!ueue messageEn!ueue message "e!eue options"e!eue options "e!ueue message"e!ueue message

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IntroductionIntroduction

E#changing messages andE#changing messages and

communicating bet$een t$o or morecommunicating bet$een t$o or more

di%erent application modulesdi%erent application modules

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Environment setupEnvironment setup

Administration and access privilegesAdministration and access privileges

&or advanced !ueuing are controlled&or advanced !ueuing are controlled

using the belo$ t$o rolesusing the belo$ t$o roles

AQ'A"INI()*A)+*'*+,E - Allo$sAQ'A"INI()*A)+*'*+,E - Allo$s

creation and administration o& !ueuingcreation and administration o& !ueuing

in&rastructure.in&rastructure.

AQ'/(E*'*+,E - Allo$s access toAQ'/(E*'*+,E - Allo$s access to!ueues &or en!ueue and de!ueue!ueues &or en!ueue and de!ueue

operations.operations.

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Packages to manage AQsPackages to manage AQs

"0('AQA" - )o per&orm belo$"0('AQA" - )o per&orm belo$

Admin operations like creatingAdmin operations like creating

!ueue1 !ueue tables1 stop !ueue1!ueue1 !ueue tables1 stop !ueue1

drop !ueue etc.drop !ueue etc.

"0('AQ - )o manage the Queues"0('AQ - )o manage the Queues

like en!ueue1 de!ueue etc.like en!ueue1 de!ueue etc.

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PayloadPayload

AQ handles messages kno$n asAQ handles messages kno$n as

payloads.payloads.

)he &ormat and structure o& the)he &ormat and structure o& themessages are designed by payloadmessages are designed by payload

Payload type can be either user-Payload type can be either user-

de2ned ob3ects 1 #ml type1 ANY"A)A1de2ned ob3ects 1 #ml type1 ANY"A)A1

*A4.*A4.

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Queue tableQueue table

Queue table store the !ueue in&ormationQueue table store the !ueue in&ormation 4e can create multiple !ueues &or the4e can create multiple !ueues &or the

single !ueue tablesingle !ueue table

Create !ueue table using the "0('AQCreate !ueue table using the "0('AQpackage.package. E#ample 55E#ample 55

"0('AQA".create'!ueue'table"0('AQA".create'!ueue'table

6!ueue'table 786!ueue'table 789##'event'!ueue'tbl919##'event'!ueue'tbl91

!ueue'payload'type 78 9customer'msg9!ueue'payload'type 78 9customer'msg9

:;:;

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Grant privilegesGrant privileges

A&ter creating and starting !ueue1 $e needA&ter creating and starting !ueue1 $e need

to give grants to user schema to manageto give grants to user schema to manage

the !ueues.the !ueues.

E#ampleE#ample"0('AQA".grant'!ueue'privilege"0('AQA".grant'!ueue'privilege

6 privilege 78 9A,,916 privilege 78 9A,,91

!ueue'name 78 9a!'admin.event'!ueue91!ueue'name 78 9a!'admin.event'!ueue91grantee 78 9a!'user>grantee 78 9a!'user>

:;:;

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Message PropertiesMessage Properties

0e&ore en!ueue a message1 4e must0e&ore en!ueue a message1 4e must

create and set the properties o&create and set the properties o&

message by using the belo$ recordmessage by using the belo$ record

typetype "0('AQ.message'properties't;"0('AQ.message'properties't;

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Message Properties(Contd!Message Properties(Contd!

message_properties_tmessage_properties_t)YPE)YPEmessage'properties't I( *EC+*" 6message'properties't I( *EC+*" 6priority 0INA*Y'IN)EGE* "E@A/,) 1priority 0INA*Y'IN)EGE* "E@A/,) 1delay 0INA*Y'IN)EGE* "E@A/,) N+'delay1delay 0INA*Y'IN)EGE* "E@A/,) N+'delay1e#piration 0INA*Y'IN)EGE* "E@A/,) NEBE*1e#piration 0INA*Y'IN)EGE* "E@A/,) NEBE*1correlation BA*CA*D6D: "E@A/,) N/,,1correlation BA*CA*D6D: "E@A/,) N/,,1attempts 0INA*Y'IN)EGE*1attempts 0INA*Y'IN)EGE*1recipient'list a!F'recipient'list't1recipient'list a!F'recipient'list't1e#ception'!ueue BA*CA*D6: "E@A/,) N/,,1e#ception'!ueue BA*CA*D6: "E@A/,) N/,,1en!ueue'time "A)E1en!ueue'time "A)E1

state 0INA*Y'IN)EGE*1state 0INA*Y'IN)EGE*1sender'id a!F'agent "E@A/,) N/,,1sender'id a!F'agent "E@A/,) N/,,1original'msgid *A46H: "E@A/,) N/,,:;original'msgid *A46H: "E@A/,) N/,,:;

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Enqeue optionsEnqeue options

enqueue_options_tenqueue_options_t)YPE)YPE

en!ueue'options't I( *EC+*" 6en!ueue'options't I( *EC+*" 6

visibility 0INA*Y'IN)EGE* "E@A/,)visibility 0INA*Y'IN)EGE* "E@A/,)

+N'C+I)1+N'C+I)1relative'msgid *A46H: "E@A/,) N/,,1relative'msgid *A46H: "E@A/,) N/,,1

se!uence'deviation 0INA*Y'IN)EGE*se!uence'deviation 0INA*Y'IN)EGE*

"E@A/,) N/,,1"E@A/,) N/,,1trans&ormation BA*CA*D6HJ: "E@A/,)trans&ormation BA*CA*D6HJ: "E@A/,)

N/,,:;N/,,:;

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Enqueue messageEnqueue message

A&ter creating the !ueue1 $e can en!ueue theA&ter creating the !ueue1 $e can en!ueue the!ueue using "0('AQ!ueue using "0('AQ

E#ample 55E#ample 55 "0('AQ.en!ueue"0('AQ.en!ueue

6!ueue'name 78 9AQA"IN.=='C/()+E*'Q916!ueue'name 78 9AQA"IN.=='C/()+E*'Q91

en!ueue'options 78 a!'en!ueue'options1en!ueue'options 78 a!'en!ueue'options1message'properties 78message'properties 78

a!'message'properties1 payloada!'message'properties1 payload78 a!'message1 78 a!'message1

msgid 78 ra$'message'handlemsgid 78 ra$'message'handle:; :;

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"eqeue options"eqeue options

de!ueue'options't )YPE de!ueue'options't I(de!ueue'options't )YPE de!ueue'options't I(*EC+*" 6*EC+*" 6consumer'name BA*CA*D6J: "E@A/,) N/,,1consumer'name BA*CA*D6J: "E@A/,) N/,,1de!ueue'mode 0INA*Y'IN)EGE* "E@A/,)de!ueue'mode 0INA*Y'IN)EGE* "E@A/,)*E+BE1*E+BE1

navigation 0INA*Y'IN)EGE* "E@A/,)navigation 0INA*Y'IN)EGE* "E@A/,)NE=)'E((AGE1NE=)'E((AGE1visibility 0INA*Y'IN)EGE* "E@A/,) +N'C+I)1visibility 0INA*Y'IN)EGE* "E@A/,) +N'C+I)1$ait 0INA*Y'IN)EGE* "E@A/,) @+*EBE*1$ait 0INA*Y'IN)EGE* "E@A/,) @+*EBE*1msgid *A46H: "E@A/,) N/,,1msgid *A46H: "E@A/,) N/,,1

correlation BA*CA*D6D: "E@A/,) N/,,1correlation BA*CA*D6D: "E@A/,) N/,,1de!'condition BA*CA*D6LJJJ: "E@A/,) N/,,1de!'condition BA*CA*D6LJJJ: "E@A/,) N/,,1signature a!F'sig'prop "E@A/,) N/,,1signature a!F'sig'prop "E@A/,) N/,,1trans&ormation BA*CA*D6HJ: "E@A/,) N/,,1trans&ormation BA*CA*D6HJ: "E@A/,) N/,,1delivery'mode P,('IN)EGE* "E@A/,)delivery'mode P,('IN)EGE* "E@A/,)

PE*(I()EN):;PE*(I()EN):;

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"equeue message"equeue message

A&ter En!ueue the message1 4e can de!uue theA&ter En!ueue the message1 4e can de!uue the

message.message. E#ample 55E#ample 55

"0('AQ.de!ueue"0('AQ.de!ueue

6!ueue'name 78 9AQA"IN.=='C/()+E*'Q916!ueue'name 78 9AQA"IN.=='C/()+E*'Q91

de!ueue'options 78de!ueue'options 78

a!'de!ueue'options1a!'de!ueue'options1message'properties 78message'properties 78

a!'message'properties1 payloada!'message'properties1 payload

78 a!'message1 msgid78 a!'message1 msgid

78 ra$ message handle :; 78 ra$ message handle :;