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. This field is no longer updated when a record is updated.
104 8 The most recent time that the TKDS header was updated, in the format hhmmssth. This field is no longer updated when a record is updated.
112 4 Length of the TKDS header record.
116 16 P11 MKVP.
132 16 RCS MKVP.
148 6 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.
155 1 Flag bytes.
Bit
Meaning When Set On
0
TKDS not completely written, missing records.
1-7
Reserved.