The parameters given in this section assume that you are using z/OS® DFSORT. However, the explanation should enable you to specify the necessary parameters for any other functionally equivalent sort program.

The output data set from Record Selection and Validation must be sorted as follows:

1. By data set name (ascending). The data set name begins at location 218¹. It is 44 (alphameric or special) characters in length.
2. By data set name extension number (ascending). The data set name extension is one binary byte at location 262¹.
3. By the date of the SMF record (descending) . The SMF date field is packed decimal, 4 bytes at location 11¹.
4. By the time of the SMF record (descending) . The SMF time field is 4 binary bytes at location 7¹.

   Note that because this field identifies the time to a granularity of 0.01 seconds, duplicate keys are possible. In order to maintain the original order of SMF records when the system encounters duplicate keys, you must specify the EQUALS sort parameter. However, if SMF records with matching time stamps were generated from different systems, ICFRU cannot know the proper order to apply these updates. This condition is indicated by the new message CRU117I, stating that ICFRU has encountered two or more SMF records from different systems referencing the same catalog entry. This message warns the user that the SMF records for the indicated Catalog entry may not have been applied in the correct order and that the user should verify the results.

SORT FIELDS=(218,44,CH,A,262,1,BI,A,11,4,PD,D,7,4,BI,D)

Other parameters may be used to optimize the performance of DFSORT. In particular, CRURRSV will count the number of SMF records selected and this count can then be supplied to DFSORT.