The upgrade process depends on the version of Sybase IQ currently installed on your system.
Uninstall Sybase IQ 15.0 before you install Sybase IQ 15.2. Use the Control Panel to remove Sybase IQ 15.0, and then proceed as if you were installing Sybase IQ for the first time.
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.
Upgrade Sybase IQ, if necessary. All database migration paths assume that you are migrating from Sybase IQ 12.6 ESD #11 or Sybase 12.7 ESD #5. If you are migrating from a version earlier than 12.6, you must upgrade your software before you migrate your database.
Review the migration chapter and plan your migration. Sybase provides utilities that you can use to migrate your 12.x data to Sybase IQ 15.2. Understanding how these utilities work can help you plan your migration more effectively. See “Migration utilities”.
Follow the work flows for the type of databases you want to migrate. There are separate migration paths for simplex and multiplex databases. See “Migrating simplex databases” and “Migrating multiplex databases”.