ZIIP

REORG PLUS can use enclave service request blocks (SRBs) to enable zIIP processing automatically while running jobs. Using zIIP processing can reduce the overall CPU time for REORG PLUS jobs.

Restriction

When invoking DSNUTILB, REORG PLUS ignores this option.

Specifying the default

You can specify the default for the ZIIP command option in your installation options module by using the ZIIP installation option. REORG PLUS was shipped with a default value of ENABLED for this option. The ZIIP command option overrides the default that is in the installation options module.

ENABLED

ZIIP ENABLED tells REORG PLUS to attempt to offload eligible processing to an available zIIP. If the zIIP is busy or not available, normal processing continues on a general-purpose processor.

To enable and use zIIP processing with REORG PLUS, you must

• Have an installed authorized version of XBM or SUF

• Start and maintain an XBM subsystem in your environment

  Warning

  Important

  You can specify a particular XBM subsystem to use by specifying a value for the XBMID installation or command option.

• Have a zIIP available in your environment

For more information, see the following references:

• For XBM or SUF requirements and considerations, see XBM-and-SUF-considerations.
• For the steps to enable zIIP processing, see Using-XBM-or-SUF-to-enable-zIIP-processing.
• For more information about the XBM component that enables the use of zIIPs, see the EXTENDED BUFFER MANAGER for DB2 documentation.
• For information about how to determine zIIP usage, view the Quick Course EXTENDED BUFFER MANAGER for DB2 - Measuring zIIP Usage.

DISABLED

ZIIP DISABLED tells REORG PLUS to not attempt to use zIIP processing.