Operations › How to Control the Number of OPSOSF Servers

How to Control the Number of OPSOSF Servers

By design, OPSOSF servers can only be started by CA OPS/MVS. The number of OPSOSF servers that CA OPS/MVS starts and keeps active is determined by the values of the OSFMIN and OSFMAX parameters. Their values can range from 1 to 30. Both parameters have a default of 2.

Important! You should never try to start an OPSOSF server manually. OPSOSF servers abend if they are not started correctly.

Suppose that the values of OSFMIN and OSFMAX are both 1. In this case, all TSO commands that the OSF processes are routed through a single address space that is always active. When the address space finishes the current TSO command, the OSF routes the next command in the queue to this server. If the queue is empty, then the server remains active while waiting for the next request to be queued.

Notes:

• There are two additional parameter values that can affect the number of active servers-the OSFDORM and OSFQADD parameters. For descriptions of these parameters, see the Parameter Reference.
• The information in this section applies to the OSFTSLMIN, OSFTSLMAX, OSFTSPMIN, and OSFTSPMAX parameters as well. The only difference is that the values of these parameters can be set to zero.