Depending on your security policy, JES2 accepts JES2 commands and MVS™ commands at different points in a job stream, with different types of control.A job stream is the set of jobs submitted between the physical start of a reader and physical end-of-file, or between the opening and closing of an internal reader data set. See Figure 1 for a pictorial representation of the following description.

JES2 accepts JES2 commands in your jobstream in the form /*$command (for example, /*$S) in front of the JOB JCL statement. JES2 also accepts MVS commands in the /*$VS, ‘systemcommand’ statement if the command authority is similar to the authority for accepted JES2 commands. An example of submitting an MVS command this way is /*$VS, 'V 0CE,offline'.

JES2 ignores JES2 commands found in the job stream between the first JOB statement and EOF. Also, JES2 ignores JES2 commands entered in a job stream through the network job receiver.

The converter executes any MVS commands (//name COMMAND 'command' where the name parameter is optional) that appear in the job stream after the first JOB statement. Whether the converter actually issues the command depends on what you specified for the converter parameters. JES2 ignores all MVS commands appearing before the first JOB statement.

Figure 1. Entering commands from a job stream