There is not a single command to do this on the AS/400. You can change the force ratio on the files you are using to reduce the number of records written to force the records from memory to storage by using the CHGPF command. You can also override the specific files in your OCL to change this attribute temporarily during this job-run. Be aware that changing the force ratio to *NONE or a very low number could cause the job to run slower.
This was first published in May 2001