Setting batch launcher logging levels

The PARM= parameter to the batch launcher can accept an optional argument to control logging messages that the launcher writes to the //SYSOUT data set. If present, this argument must be the first argument.

The PARM= parameter can have one of the following values:

Table 1. Optional arguments
Level	Description
`+E`	Only error level messages are emitted.
`+W`	Adds warning level messages.
`+N`	Adds notice level messages (the default).
`+I`	Adds informational messages. This level includes a dump of the environment variables (including `CLASSPATH`) before creating the Java™ VM.
`+D`	Adds debugging level messages. This level prints input to and output from the `//STDENV` configuration script process.
`+T`	Adds trace level messages. Use this level should if you are reporting a launcher problem to IBM.

The sample JCL procedure JVMPRCxx has a keyword parameter, LOGLVL=, which you use to set this option.