ZCYCL: Cycle down or cycle up (change the system operating state)

Use this command to change from one system state to another.

Last updated

Changed for PUT06.
Changed for PUT00.

Requirements and restrictions

None.

Format

1052: cycles the z/TPF system to 1052 state.
GFS: skips get file storage (GFS) cycle-down during z/TPF system cycle to 1052 state.
CRAS: cycles the z/TPF system to CRAS state.
MESW: cycles the z/TPF system to MESW state.
NORM: cycles the z/TPF system to normal (NORM) state.
UTIL: cycles the z/TPF system to utility (UTIL) state.
ALL: cycles all subsystems in a multiple database function (MDBF) environment. (You can also specify this parameter for a non-MDBF environment.)
BP: bypasses the check of active utility functions.
INC: cycles the specified subsystems.
Note: You can specify this parameter only in an MDBF environment.
EXC: cycles all the subsystems except the specified subsystems.
Note: You can specify this parameter only in an MDBF environment.
ssname: is the 1- to 4-character alphanumeric name of a subsystem (MDBF only). You can specify as many as 10 subsystem names.

Additional information

You can cycle to the next higher state when the CRAS is inactive by causing an external interrupt. However, when catastrophic error recovery is being performed, causing an external interrupt will only prevent the recovery.
Enter the ZDSYS command to display the current system state.
When you perform an IPL from the loader general file (LGF), the z/TPF system must be in 1052 state or UTIL state.

Examples

The following example cycles the z/TPF system to NORM state.

User:   ZCYCL NORM

System: CYCL0001I 10.49.46 CYCL TO NORM - STARTED+
        CSMP0097I 10.50.55 CPU-B SS-BSS  SSU-HPN  IS-01
        CJ040003I 10.50.55 TO2 CYCLED UP+
        CSMP0097I 10.50.55 CPU-B SS-BSS  SSU-HPN  IS-01
        VFAC0015I 10.50.55 DELAYED FILES ENABLED
        CSMP0097I 10.50.55 CPU-B SS-BSS  SSU-HPN  IS-01
        CVCX0001I 10.50.55 SS BSS  NOW IN NORM STATE +

Related information

See z/TPF Database User's Guide for more information about performing an IPL from an LGF.
See z/TPF Main Supervisor Reference for more information about changing system states.