iqunlspt is a self-contained subset of the Sybase IQ 12.7 (ESD #5) database engine that provides support for legacy database unloads. iqunlspt is installed with Sybase IQ 15.
iqunlspt runs in the background and contains no console or GUI window. When you run the migration tool, you will see the iqunlspt process running.
iqunlspt accepts startup arguments if your database requires special switches or memory settings. This is useful for providing diagnostic switches, such as -z or -zr, while troubleshooting. Since the migration process re-creates only your database schema, it is unlikely that you will need to set any command line arguments for the unload support engine.