Derivation: VeCToR environment to be SAVEd

VCTRSAVE specifies whether any language in the application uses the vector facility when user-written condition handlers are called.

Non-CICS default

VCTRSAVE=((OFF),OVR)

CICS® default

VCTRSAVE is ignored under CICS.

Syntax

                      .-OFF-.        .-OVR----.      
>>-VCTRSAVE--=--(--(--+-ON--+--)--,--+-NONOVR-+--)-------------><

OFF

No language in the application uses the vector facility when user-provided condition handlers are called.

ON

A language in the application uses the vector facility when user-provided condition handlers are called.

OVR

Specifies that the option can be overridden.

NONOVR

Specifies that the option cannot be overridden.

z/OS® UNIX considerations

The VCTRSAVE option applies to the entire enclave and all threads within.

Performance considerations

When a condition handler plans to use the vector facility (that is, run any vector instructions), the entire vector environment has to be saved on every condition and restored on return to the application code. You can avoid this extra work by specifying VCTRSAVE(OFF) when you are not running an application under vector hardware.