RE: Basics on Advanced Queuing

Hi,

I think you should start reading first the Oracle Manual for Advanced Queuing. 
It describes the basics but also the advanced stuff. Have a look at 
http://download.oracle.com/docs/cd/E11882_01/server.112/e11013/toc.htm (This 
the 11.2 version).

Herald ten Dam
superconsult.nl
________________________________
Van: oracle-l-bounce@xxxxxxxxxxxxx [oracle-l-bounce@xxxxxxxxxxxxx] namens 
Mahadevan, Sundar [Sundar.Mahadevan@xxxxxxx]
Verzonden: woensdag 20 januari 2010 23:17
Aan: oracle-l@xxxxxxxxxxxxx
Onderwerp: Basics on Advanced Queuing

Hi List,
Hope all is well. I am just starting to learn about Advanced Queuing. The 
following were the documents that I read to get a hint on Advanced Queuing.

Oracle 11g Advanced queuing white paper
http://en.wikipedia.org/wiki/Message_queue
http://it.toolbox.com/blogs/oracle-guide/advanced-queues-and-streams-a-definition-in-plain-english-3677
http://www.oracle-developer.net/display.php?id=411

I searched more on google for basics on AQ but not much help. Unfortunately, I 
was unable to get the basic understanding of advanced queuing due to the fact 
that I cannot imagine how Message queues work (business logic). To my 
understanding, streams are used for replication while advanced queuing is used 
for Message queues. And btw, streams internally use AQ. The following are my 
question pertaining to Advanced Queuing(message queues):

1) Is AQ happening between 2 databases or within a single database but 2 
different schemas?
2) Is it imperative that dblinks are created for AQ to work or you do not need 
dblinks for AQ to work(if AQ happens between 2 databases)
3) If AQ happens within a single database but 2 different schemas then a grant 
all on the other user's objects can be used for message queues. So what is the 
idea here?

Apologies if my questions are silly. I would appreciate if anyone could reply 
back with the basics of AQ in simple terms and the business logic behind it.

Thanks a ton.

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