Starting RMF

Enabling RMF:

RMF™ is an optional element of z/OS®. It is present in the system, whether you have purchased it or not. If you have not specifically ordered RMF, it is disabled. This start procedure will not work, and you will receive the message:

ERB111I RMF IS NOT ENABLED TO RUN ON THIS SYSTEM

It is the task of the system administrator to see to it that RMF, if licensed, is enabled to run.

The system command START invokes the RMF cataloged procedure, and you can override specifications in the procedure JCL statements with specifications on the START command.

The syntax of the START command for RMF is:

{START} RMF,,,[parm]
{S    }

parm

Can serve the following purposes:

specifying the SMF buffer options (see Controlling the SMF buffer)
specifying the Monitor I gatherer session options (see Long-term data gathering with Monitor I)
If you specify options, each must have the form:
```
option [(value)] for example: DEVICE(DASD)
```
providing automatic sysplex-wide management for the Distributed Data Server (see Starting the Distributed Data Server)

Multiple options must be enclosed in parentheses and separated by commas, for example:

(DEVICE(DASD),CYCLE(500),DDS)

By default, Monitor I is started along with RMF. If options are specified for parm, they will be used. To start a Monitor I session using options from the default Parmlib member ERBRMF00 or program defaults, omit this parameter. See How RMF processes session options.

If you do not want to start the Monitor I session, specify only NOZZ for parm.

Note: RMF can not run in reusable address spaces. It is not possible to specify REUSASID=YES on the START command.

Examples:

To start the RMF control session only, issue the system command:
```
START RMF,,,NOZZ
```
To start both RMF control and Monitor I sessions, specify:
```
START RMF
```
To start RMF with a Monitor I session and the Distributed Data Server, issue the command:
```
START RMF,,,DDS
```
To start both RMF control session and Monitor I, and specify options, issue the command:
```
START RMF,,,(DEVICE(DASD),CYCLE(500))
```
To start RMF with a Monitor I session and an SMF buffer of 32 megabytes in which SMF record types 72 to 74 are to be stored, specify:
```
START RMF,,,(SMFBUF(RECTYPE(72:74)))
```