Sybase provides procedures and utilities that let you to upgrade your database.
Review the migration procedures in Database Upgrades and plan your migration. Follow the work flows for the type of database you want to migrate. There are separate migration paths for simplex and multiplex databases.
Choose an appropriate installation directory. You cannot install Sybase IQ in the same parent directory as an earlier version. Uninstall the version currently installed on your system, or install Sybase IQ in a different parent directory.
Upgrade your client tools. Although you can use the current version of the client tools to connect to an earlier 15.x server, some options, tools, and objects may not be available.