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SMF Type 0 Record

This table shows the record layout for type 0 SMF records
(IPL Header).

List of other SMF record layouts available.
List of sample SMF reports.

Purpose: Record type 0 is written after every SMF initialization. It includes the virtual and central storage sizes and some of the SMF options in effect. See record type 90 (subtype 9) for information about the IPL of SMF.

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SMF Type 0 Record -- IPL Header
Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
Segment descriptor (see record length field).
System indicator: Bit Meaning When Set 0-2 Reserved 3-6 Version indicators* 7 Reserved.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
Record type 0 (X'00')
Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
System identification (from the SID parameter).
Limit, in minutes, of continuous wait for the job (taken from JWT parameter).
This field contains meaningless information.
Number of 1K bytes in virtual storage.
SMF options Bit Meaning When Set 0 Reserved 1 Reserved 2 Reserved. 3 Data set accounting. Record types selected. This bit is on when one of the following record types is selected: 14, 15, 17, 18, 62, 63, 64, 67 or 68. (See “Selecting SMF records” on page 4-2.) 4 Volume accounting. Record types 10 or 69 selected. (See “Selecting SMF records” on page 4-2.) 5 Reserved. 6 Type 17 records will be written for temporary data sets (REC(ALL)). 7 Reserved.
Number of 1K bytes in central storage.
MVS product name.
System name (from the SYSNAME parameter in the IEASYSxx parmlib member).
Sysplex name (from the SYSPLEX parameter in the COUPLExx parmlib member).

The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.

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