Short OBR record

Table 1. Format of the short OBR record
Offset Size (bytes) alignment (bits) Field name Description
Dec Hex
0 (0) 1 CLASRC Class/Source:
    ..11 ....   OBR (unit check) record; type=X'30'.
    ..11 .1..   No longer generated.
    ..11 .11.   TP access method (VTAM®) OBR record; type=X'36'.
1 (1) 1 SYSREL System/Release level:
    100. ....   OS/VS2.
    bits 3-7    
    0-1F   Release level 0-31.
2 (2) 4 SWITCHES Record switches:
    Byte 0    
    1... ....   More records follow.
    0... ....   Last record.
    .1.. ....   Time-of-day (TOD) clock instruction issued. Used in conjunction with date and time values at displacements 8 and 12.
    ..1. ....   Record truncated.
    ...1 ....   Record created by MVS/SP Version 2 or 3.
    .... 1...   TIME macro used.
    .... .xxx   Reserved.
    Byte 1    
    1... ....   SDR counters dumped at EOD.
    .1.. ....   Temporary error.
    ..1. ....   Short record (0 for long record).
    ...1 ....   MP system.
    .... 0...   Central processor A issued last SSCH.
    .... 1...   Central processor B issued last SSCH.
    .... .1..   Volume demount.
    .... ..x.   Reserved.
    .... ...x   Reserved.
    Byte 2   Not used for OBR record.
    Byte 3   Reserved.
6 (6) 1 RCDCNT Record count:
    bits 0-3   Sequence number of this physical record.
    bits 4-7   Total number of physical records in this logical record.
7 (7) 1   Reserved.
8 (8) 4 DATE System date of incident.
12 (C) 4 TIME System time of incident.
16 (10) 1 VERNO Machine version code.
17 (11) 3 CPUSER Central processor serial number.
20 (14) 2 CPUMOD Central processor machine model number.
22 (16) 2 MCELLNG Reserved.
         
        END OF STANDARD HEADER
         
24 (18) 4 SDEVTYP Device type associated with failing device.
28 (1C) 1 SSDRCNT Number of bytes of statistical data to be recorded from SDR work area at displacement 32.
29 (1D) 3 SCUA Device number being used when failure occurred.
32 (20) variable SSDR SDR counter area containing statistical counter/indicator data from device statistics table.