The net change utility is a Java™-based tool that uses Java command syntax.
The syntax for the net change utility is:
java -server -jar jnce.jar --cfg-file=filename.ini --base-file=filename.base --new-file=inputfile --out-root=filename
The Java VM -server flag must always be included in the command line when running net change utility. Including this flag offers a significant performance increase.
You can use the following command line switches to specify how net change utility works.
--init --cfg-file=configfile --base-file=filename.base or --init --KeyWidth=100 --base-file=filename.base
Resizes KeyWidth of an existing base file. Requires the new KeyWidth size. If using a base file older than version 3.6, you must specify the CriteriaWidth.
--resizeKey --KeyWidth=50 --base-file=filename.base
Use this switch only if you want more that one .diff file. To aid in processing speed, net change utility is designed to create results into a specified number of .diff files where it places one record in each file until the last file is reached, then starts again with the first file.
If you use this switch, the difference file includes the first instance of an unchanged record and marks it with a `S' action flag. The default is to ignore these records as duplicates.
Only use if absolutely necessary. Using the compress-base-file option can involve a significant performance cost.