Use the version 12 Unload utility (dbunload) with the -an (create a new database) or -ar (replace the old database) option. See Rebuild a version 9 or earlier database using the Unload utility (command line).

Unload the database using the version 12 Unload utility, and then reload the database using the reload.sql file on the version 12 database server.

If you need to make schema changes, this is the recommended way of upgrading. After you make the schema changes, you can create a new database, and then apply the reload script to it.

Use the Unload Database Wizard in Sybase Central. You can choose to create a new database, replace an existing database with the new database, or unload the database to a file. See Rebuild a version 9 or earlier database (Sybase Central).

Unload the database using an older version of dbunload, and then reload the database using the reload.sql file and the version 12 database server. You should only use this approach if the other methods fail because deprecated or unsupported database option settings, objects, or SQL syntax could be unloaded into the reload.sql file. You must edit the file manually if problems occur during the reload. The internal reload capabilities of version 12 take care of many of these problems.