Coding for Efficiency › JCL Considerations

JCL Considerations

Defined record lengths, the amount of space allocated, and blocking factors affect CA Culprit's use of system resources. The following specifications are recommended:

• On SYS005 (parameter file), the record length must be 320 bytes. A quarter or half track is recommended for the block size.
• On SYS006 (extract file) and SYS008 (NOSORT file), record length should be at least 256 bytes (larger for nonprint records). Block size should be equal to a half or full track, large enough to avoid overrides. Contiguous space is the most efficient, but not always possible.
• On SYS007 (SORT parameters), the record length should be 80 bytes and block size should be a quarter track.