Default actions of the node abnormal condition program

The default actions of the node abnormal condition program, DFHZNAC, vary, depending on the terminal error code and system sense codes received from z/OS® Communications Server.

In most cases, DFHZNAC issues messages and sets one or more “action flags” in the communication area passed to the node error program, DFHZNEP. DFHZNEP then has the opportunity to change the default actions (though not the messages) by setting or resetting flags. (Note, however, that in some circumstances, the actions taken can vary from the actions set, depending on the state of the node at the time of the error.)

For more information about DFHZNAC and DFHZNEP, see Writing a node error program.