This table provides automation and recovery scenarios for using UNIX System Services.
Task | UNIX System Services automation and recovery scenarios |
---|---|
Startup | UNIX System Services is a permanent component of MVS and is started automatically at IPL time. |
Shutdown | You can use the MODIFY command to control z/OS® UNIX System Services and to terminate a z/OS UNIX process or thread. You can also use it to shut down z/OS UNIX initiators and to request a SYSMDUMP for a process. For more information on the MODIFY command see z/OS MVS System Commands, SA22-7627. |
Handling in-flight or indoubt transactions if there is a failure | The only data that could be considered transactional in nature is data stored in the HFS. |
How to determine if UNIX System Services is running | UNIX System Services is always available as long as the system is up and running. |
What happens to WebSphere® for z/OS if UNIX System Services goes down? | If UNIX System Services fails, the system must be re-IPLed, or you can use the MODIFY OMVS command to recycle z/OS UNIX System Services. This is an alternative to re-IPLing the system in order to reinitialize the z/OS UNIX System Services environment. This command should be used only on a limited basis when complete reinitialization and reconfiguration are required. Prior to issuing MODIFY OMVS to initiate a shutdown, you should review the information about shutdown in z/OS UNIX System Services Planning. For more information on the MODIFY command see z/OS MVS System Commands, SA22-7627. |
What happens to other subsystems if UNIX System Services goes down? | If UNIX System Services fails, then other subsystems will be adversely affected until the problem is resolved. The system must be re-IPLed, or you can use the MODIFY OMVS command to recycle z/OS UNIX System Services. This is an alternative to re-IPLing the system in order to reinitialize the z/OS UNIX System Services environment. This command should be used only on a limited basis when complete reinitialization and reconfiguration are required. Prior to issuing MODIFY OMVS to initiate a shutdown, you should review the information about shutdown in z/OS UNIX System Services Planning. For more information on the MODIFY command see z/OS MVS System Commands, SA22-7627. |
Where to find more information | z/OS UNIX System Services Planning |