Planning your z/OS UNIX environment

Certain processes within the IBM® MQ queue manager, channel initiator, and mqweb server use z/OS® UNIX System Services (z/OS UNIX) for their normal processing.

The queue manager and channel initiator started task user IDs need an OMVS segment with a UID defined in order to be able to access z/OS UNIX. The user IDs require no special permissions in z/OS UNIX.

Note: Although the queue manager and channel initiator make use of z/OS UNIX facilities (for example, to interface with TCP/IP services), they do not need to access any of the content of the IBM MQ installation directory in the z/OS UNIX file system. As a result, the queue manager and channel initiator do not require any configuration to specify the path for the z/OS UNIX file system.

The mqweb server, which hosts the IBM MQ Console and REST API, makes use of files in the IBM MQ installation directory in the z/OS UNIX file system. It also needs access to another file system which is used to store data such as configuration and log files. The mqweb started task JCL needs to be customized to reference these z/OS UNIX file systems.

The content of the IBM MQ directory in the z/OS UNIX file system is also used by applications connecting to IBM MQ. For example, applications using the IBM MQ classes for Java or IBM MQ classes for JMS interfaces.

See the following topics for the relevant configuration instructions: