simpleJMSTransReadme.md

Simple put transaction sample

• Transacted context
• Commit
• Rollback

Point-to-point without a transaction

Point-to-point with a transaction

Point-to-point with a transaction - commit

Point-to-point with a transaction - rollback step 1

Point-to-point with a transaction - rollback step 2

Steps

Open a terminal window.

Have the terminal window side-by-side with a browser window open at your MQ Console.

Move to your local cloned mq-dev-patterns/transactions/JMS/SE directory.

Check you have the javax.jms-api-2.0.1 and the com.ibm.mq.allclient jars.

Run the list command

ls

You should see the jars in amongst the other files:

javax.jms-api-2.0.1.jar
com.ibm.mq.allclient.9.2.0.0.jar

Compile the simple put transaction sample:

javac -cp ./com.ibm.mq.allclient-9.2.0.0.jar:./javax.jms-api-2.0.1.jar com/ibm/mq/samples/jms/simpleJmsTransaction.java

Run the compiled program:

java -cp ./com.ibm.mq.allclient-9.2.0.0.jar:./javax.jms-api-2.0.1.jar:. com.ibm.mq.samples.jms.simpleJmsTransaction

Refresh the queues.

Depending on whether the random number is odd or even, the program will call a commit or rollback method.

During the 15 second wait in the program before rollback or commit is called, you'll see the queue depth increase on the target queue DEV.QUEUE.1.

If you refresh the queues after the 15 second wait is over, the queue depth will update;

If the random number was odd, commit is called and the message is put on the DEV.QUEUE.1 queue.

If the random number was even, rollback is called and the message is rolled back and not put to the queue.

Go ahead and try

• Transaction in a request response scenario

or

• Transaction when sending several messages together

You can also go back to the starting README to read more and check out links to other useful topics on transactions.