computing Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and development of both hardware and software. Computing has scientific, ...

, Oracle Advanced Queuing (AQ) is a sort of

message-oriented middleware Message-oriented middleware (MOM) is software or hardware infrastructure supporting sending and receiving messages between distributed systems. MOM allows application modules to be distributed over heterogeneous platforms and reduces the comple ...

developed by Oracle Corporation and integrated into its Oracle database. AQ uses database structures as a repository for asynchronous

queuing Queue areas are places in which people queue (first-come, first-served) for goods or services. Such a group of people is known as a ''queue'' (British usage) or ''line'' (American usage), and the people are said to be waiting or standing ''in ...

as an element in various Oracle-oriented and heterogeneous operations. Oracle features utilising Advanced Queuing include: * Oracle Data Guard * Oracle Streams In Oracle Data Guard primary databases the queue monitor process (often running as ''qmn0'') interacts with AQ. As of Oracle release 9.2, AQ comes bundled with Standard Edition and Enterprise Edition at no extra cost. As of Oracle release 10.1, AQ is integrated into Oracle Streams, and is called "Oracle Streams AQ". As of Oracle release 12.1, Oracle Streams is deprecated and AQ is again named just "Oracle AQ". Oracle AQ is used as the internal

Java Message Service The Jakarta Messaging API (formerly Java Message Service or JMS API) is a Java application programming interface (API) for message-oriented middleware. It provides generic messaging models, able to handle the producer–consumer problem, that can ...

provider in the Oracle Enterprise Service Bus. In addition to asynchronous message exchanges (point-to-point and publish–subscribe), Oracle AQ can also perform message transformation via SQL functions. Oracle AQ is available in all editions of Oracle database, including XE.

References

External links

Oracle 11g Streams Advanced Queuing User's Guide (11.2)

* * ttp://www.stanford.edu/dept/itss/docs/oracle/9i/appdev.920/a96587/toc.htm Oracle9i Advanced Queuing manual
Oracle Database 10g Product Family
Message-oriented middleware Oracle software {{database-software-stub