Binary streams are not supported. Check the value returned by the method you called. The following class method sends the contents of a file character stream. It uses the same queue used in the previous example:. The connection object has a message queue from which you can retrieve messages.
For both methods, the second argument is the timeout, in milliseconds; this controls the time used to contact the server. The default timeout is 0. The following class method retrieves a message from the cachetest queue. MQRecv classes also provide the following methods:. The following steps describe how to use these sample programs on Windows. The details may be different on other operating systems; consult the IBM documentation and check the names of the files present in your client.
For example:. Now you can send messages. Simply type each message and press Enter after each message. When you are done sending messages, press Enter twice. You will then see a line like the following:. To complete this test, we will retrieve the messages you sent to the queue.
Type the following command at the command line:. You should then see a start line, followed by the messages that you sent previously, as follows:. This sample program waits briefly to receive any other messages and then displays the following:. If the test fails, consult the IBM documentation. Possible causes of problems include the following:. Thanks for your feedback! Asynchronous solutions, such as IBM MQ, protect that data and resume its transport when the system becomes available again Message encryption : Various solutions offer protection for data at rest.
If the disk is hacked and only the disk is encrypted, everything on that disk is vulnerable. Protection of the messages themselves gives extra peace of mind. View all our work. Need Help? Talk to a specialist at DeeperThanBlue Get in touch. Middleware related news:. You Read More. Blog - 07 July Is your business ready for Cognitive Computing? If you are interested in excelling in your market, becoming a digital disruptor or simply finding out more please get in touch.
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On UNIX platforms, a gateway process is started for each user session. Oracle Net provides client to server and server-to-gateway communication. It enables an Oracle application to communicate with the Oracle database, and it enables the Oracle database to communicate with the gateway.
If the Oracle database is not on the same system as the gateway, then you must install the correct Oracle networking software on the platform where the Oracle database is installed. The database link is the construct used to identify Oracle databases. The WebSphere MQ server might, or might not, be on the same system as the gateway.
The gateway has some of the same components as an Oracle database. The following components are included:. An initialization file similar to the Oracle database initialization parameter file. The gateway does not have control, redo, or database files, nor does it have the full set of subdirectories and other files associated with an Oracle database.
The gateway is not started in the same way as the Oracle database. It has no background processes and does not require a management utility such as Oracle Enterprise Manager. Each Oracle database user session that accesses a gateway creates an independent process on the host system that runs the gateway. It contains the following sections: Introduction to Message Queuing Introduction to WebSphere MQ Introduction to the Gateway Introduction to Message Queuing Message queuing enables distributed applications to communicate asynchronously by sending messages between the applications.
Term Description Message queues Storage areas for messages exchanged between applications. WebSphere MQ client configuratio n A WebSphere MQ configuration where the queue manager and message queues are located on a different remote system or node than the application software.
Client applications connect to the remote queue manager using IBM software that provides the necessary networking software to connect to the remote queue manager. WebSphere MQ server configuration A WebSphere MQ configuration where the queue manager and message queues are located on the same local system or node as the application software.
Client applications connect to the local queue manager using MQI. Queue manager A WebSphere MQ feature that provides the message queuing facilities that applications use. It manages the queue definitions, configuration tables, and message queues. The queue manager also forwards messages from the sender queue to the remote recipient queues.
Trigg ers A WebSphere MQ feature that enables an application to be started automatically when a message event, such as the arrival of a message, occurs. Triggers can be used to invoke programs or transactions. For example, a trigger could cause an Oracle application to call the gateway to retrieve a WebSphere MQ message and process it.
Gateway Terms The following table describes gateway terms used in this guide. Term Description Gateway initialization file A file containing parameters that determine the running of the gateway. Gateway remote procedures Remote procedures implemented by the gateway.
These procedures are used to invoke WebSphere MQ operations. Oracle database Any Oracle database that communicates with the gateway. Oracle applications do not communicate directly with the gateway.
The Oracle database can be on the same system as the gateway or on a different system. Production Oracle database As used in this guide, the production database refers to any Oracle database that you use for production, for actual business and not for testing. Remote procedure call A programming call that invokes a program on a system in response to a request from another system.
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