Changing DFSORT defaults with control statements

If you want to change DFSORT system defaults to improve sort performance, pass information to DFSORT through control statements in the runtime data set IGZSRTCD.

About this task

The control statements that you can include in IGZSRTCD (in the order listed) are:

Procedure

  1. SMS=nnnnn, where nnnnn is the length in bytes of the most frequently occurring record size. (Use only if the SD file is variable length.)
  2. OPTION (except keywords SORTIN or SORTOUT).
  3. Other DFSORT control statements (except SORT, MERGE, RECORD, or END).

Results

Code control statements between columns 2 and 71. You can continue a control statement record by ending the line with a comma and starting the next line with a new keyword. You cannot use labels or comments on a record, and a record itself cannot be a DFSORT comment statement.

Related tasks  
Controlling sort behavior  
DFSORT Application Programming Guide (Using DFSORT program
   control statements)

Related references  
Default characteristics of the IGZSRTCD data set