Trace Record Header

4

0

N

RDW for buffer

4

4

C

Trace record ID ("NSYT")

4

8

N

Date first PIU in transaction was traced (in packed decimal form 00yydddf)

4

12

N

Time first PIU in transaction was traced (hundredths of seconds since midnight)

4

16

N

Number of transactions in buffer

12

20

N

Reserved

Transaction Header

4

0

N

Entry length of transaction

8

4

C

Application name being traced

8

12

C

LU name being traced

2

20

N

Transaction host response time (in 216 microseconds)

2

22

N

Transaction network response time (in 216 microseconds)

1

24

N

Flag for this transaction (X'80' - virtual LU being traced)

PIU Entry

2

0

N

Length for this PIU entry

1

2

N

Flag for this PIU:

• X'80' - inbound flow
• X'40' - not first PIU segment (no RH)

5

3

N

Date and time of PIU (5 high-order bytes of CPU clock)

2

8

N

Number of bytes in PIU (RH + RU)

3

10

RH being traced

Length of RU*

13

RU

*Length for this PIU entry minus 13

Buffer Trace Record Layout, Block Level Data

4

0

N

Block descriptor word

Buffer Trace Record Layout, Record Level Data

2

0

N

Record length

4

2

Reserved

8

6

N

Time record was written

2

14

N

VTAM log ID (X'E019')

4

16

N

ASCB pointer for writing job

8

20

C

Job name of task

2

28

N

ID of record

8

30

N

Time of day

1

38

N

Buffer type (1=in, 2=out)

1

39

N

Flag for this PIU:
X'03' - only record in PIU

8

40

C

Destination LU name

4

48

N

Destination subarea

2

52

N

Destination element address

8

54

C

Origin LU name

4

62

N

Origin subarea

2

66

N

Origin element address

26

68

X

Transmission header (TH)

3

94

X

Request/response header (RH)

97

X

Start of RU data