Format of the header record of the token data set

There is one header record for the token data set.

Table 1. Format of the header record of the token data set
Offset (decimal) Length of field (bytes) Description
0 72 VSAM key of the TKDS header
Bytes 0-39:
Binary zeros
Bytes 40-43:
EBCDIC "THDR"
Bytes 44-71:
Binary zeros
72 8 Reserved for IBM's use
80 8 The date that the TKDS was created, in the format yyyymmdd
88 8 The time that the TKDS was created, in the format hhmmssth
96 8 The most recent date that the TKDS header was updated, in the format yyyymmdd
104 8 The most recent time that the TKDS header was updated, in the format hhmmssth
112 4 Length of the TKDS header record
116 16 P11 MKVP
132 22 Reserved.
154 1
Version number of the TKDS in binary.
  • Set to X'00' for fixed length record format or variable length record format.
  • Set to X'02' or greater for KDSR record format.
    Flag bytes.
Bit
Meaning When Set On
0
TKDS not completely written, missing records.
1-7
Reserved.
Parent topic: Token data set (TKDS) format