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Description z/OS MVS Programming: Sysplex Services Reference SA38-0658-00 |
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A MONITOR_LIST request allows you to start (ACTION=START) or stop (ACTION=STOP) monitoring a specified list (LISTNUM) for the presence of entries. When starting list monitoring, you must specify the list notification vector index (VECTORINDEX) to be associated with the LISTNUM list. List services uses the specified vector index to indicate whether the list is in the empty or non-empty state. If you want to be notified when one of the lists for which list monitoring has been activated has changed state from empty to non-empty, you can specify DRIVEEXIT=YES. This option causes your list transition exit to be driven, informing you that a list that you monitor now has at least one entry on it. Your list transition exit must be identified on the LISTTRANEXIT parameter of the IXLCONN macro. To determine which of the monitored lists has changed state, you must use the IXLVECTR macro. There are some considerations involving when you must stop list
monitoring. If you have started list monitoring for a certain list
with a certain vector index specified and you want to:
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