During error recovery processing (ERP), VTAM® writes outboard recorder (OBR) records and miscellaneous data records (MDRs) to LOGREC. OBR records are written for hardware errors on channel-attached devices. (OBR records are written for communication adapter-attached devices as well.) MDRs or alerts are written for hardware errors on NCP-attached devices. See Recording NMVT alerts in LOGREC for more information on MDRs.

EREP formats and prints the LOGREC data set.

Permanent error records show the date, time, logical unit name, type of record, contents of counters, failing CCW, channel device name, CSW, sense information, device type, and flags. The time field shows the time at which the permanent error occurred.

Counter overflow and end-of-day records show the date, time, logical unit name, type of record (counter overflow or end-of-day), contents of counters, channel or unit address, and device type. The time field shows the time at which the counter overflow or end-of-day error occurred.

Counter overflow records are written when the temporary error counter or a device statistics table counter is about to overflow. VTAM maintains a counter for each channel-attached device. This counter tracks temporary errors. Counters of unit check errors by error type are also maintained in the device statistics table.

End-of-day records are written whenever a VARY INACT command is entered for a link or channel.

See the EREP entry in Table 1 to determine what document describes how to print and interpret MDR and OBR records.