SOA Suite on EC2

Setting up Amazon Web Services (EC2 and S3)

This arcticle on OTN guided me while signing up for:

• Amazon AWS
• Amazon S3 – Simple Storage Service
• Amazon EC2 – Elastic Compute Cloud

and to setup PuTTY. The only hick-up here was that I’m using the PortableApps version of PuTTY that doesn’t come with the puttygen – Key Generator.

Provisioning a SOA Server on Amazon EC2

This blogpost guided me in the provisioning of the AMI (Amazon Machine Image).

• AMIs are per region: The Amazon Machine Instance (AMI) for SOA Suite (id = ami-acb557c5) is only available in the US East (Northern Virginia) Region.
• Don’t bother to setup the Elastic Block Store (EBS) Volume. It is scripted in the latest version of the AMI, as described in step 5 of “SSH to your image and accept license”. The EBS Volume is seeded using a snapshot (id = snap-dd980db4) that is provided. This volume will be used to persist your data across sessions and AMI start/stop.
• When launching the image (during the Configure Firewall step) set the SecurityGroup to accept HTTP traffic on port 7001 in case you want to use the SOA Suite from outside the Image.

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SELECT aq.name
,      aq.queue_table
,      aq.queue_type
,      v$aq.* 
FROM   v$aq
,      all_queues aq
WHERE  aq.qid = v$aq.qid
-- use if looking for ESB AQ: and    aq.queue_table = 'ESB_JAVA_DEFERRED';
;

The query will result in something like:

It contains the following metrics:

• Waiting – Number of waiting message;
• Ready – Number of messages with status ready;
• Expired – Number of expired messages;
• Total Wait – Total waiting time per queue;
• Average Wait – Average waiting time per queue.

A describtion of the AQ and Streams views can be found here.

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SELECT name
,      queue_table
,      enqueue_enabled
,      dequeue_enabled
,      max_retries
,      retry_delay
FROM   user_queues
;

The query example is based on user_queues and in that case it has to be performed as the owner of the queue. The result wil be something like:

AQ enqueu dequeue

For this case a blog by a former colleague helps us out. This approach boils down to…

Find the queue you want to monitor.

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SELECT owner
,      queue_table
,      type
,      user_comment
FROM   all_queue_tables

Perform a query.

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SELECT msgid
,      enq_time
,      enq_uid
,      qt.user_data.text_vc
FROM   my_queue_table qt  --alter the table name
WHERE  q_name = 'MY_QUEUE' --alter the queue name