NoDup(ImageFast(…))

Figure 1. Syntax

1! NODUP(IMAGEFAST(5))
1 NoDup(IMAGEFAST(mins? ,
2.1  IMS (
2.2.1+ ,
2.2.1  INCLUDE ( selection )
2.2.1  EXCLUDE ( selection )
2.1 )))
selection

1+ ,
1  IMSTYPE (
2.1 *
2.2.1+ ,
2.2.1 MPR
2.2.1 BMP
2.2.1 IFP
2.2.1 JMP
2.2.1 JBP
1 )
1  IMSID (
2.1 *
2.1 + , ims_id
1 )
This suboption is used to specify the number of minutes elapse time, since the last occurrence of a fault, during which subsequent invocations of Z Abend Investigator for other faults in the same MVS™ image are deemed duplicates of the last fault, if they satisfy the appropriate fault characteristics criteria. This type of fault suppression is referred to as IMS™ fast duplicate fault suppression.
Notes:
  1. In order to enable IMS fast duplicate fault suppression, the Z Abend Investigator HFZS subsystem must be started with the IMAGEFAST PARM field option, as well as the UPDINDEX option. NoDup(ImageFast) processing is not performed if the TCBFX flag in the abending TCB is on.
  2. Only PDSE history files that are managed by the HFZS subsystem are able to participate in the IMS fast duplicate fault suppression.
  3. The NoDup(ImageFast) option is used by the Z Abend Investigator HFZS subsystem only. Changes to the NoDup(ImageFast) option only take effect after stopping and restarting the Z Abend Investigator HFZS subsystem.

For details, see Using the Z Abend Investigator HFZS subsystem.

The valid range of the minutes value specified in mins is 0 - 10080 (10080 is equivalent to one week). Specification of 0 minutes means that "IMAGEFAST" duplicate faults are not detected.

The default elapse time is 5 minutes.

In the IMS environment, a fault is considered a duplicate of another if the faults occurred within the specified elapse time (mins), and the following fault details are identical:

NoDup(ImageFast) signatures are kept in the HFZS subsystem on each MVS image. Changes to the NoDup(ImageFast) option take effect only after stopping and restarting the Z Abend Investigator HFZS subsystem. For details, see Using the Z Abend Investigator HFZS subsystem.

By default, all IMS jobs are eligible for IMS fast duplicate fault suppression. This approach is the equivalent of having specified the option
NoDup(ImageFast(minutes,IMS(INCLUDE(IMSTYPE(*),IMSID(*)))))
Use the INCLUDE or EXCLUDE suboptions of the NoDup(ImageFast(minutes,IMS(…))) option to restrict eligibility for IMS fast duplicate fault suppression. Here are the specification rules:

When a fault is deemed a duplicate of another based on the fault characteristics and the NoDup(ImageFast(…)) option in effect, the fault analysis is skipped, the duplicate count associated with the original fault is incremented by one, and message HFZ0121I is issued.