read path\scripts\jcatalog.sql
where path is your Sybase IQ installation directory.
You can also use a command prompt to add the jConnect system objects to a version 12.7 database. At the command prompt, type:
dbisql -c "uid=user;pwd=pwd" path\scripts\jcatalog.sql
where user and pwd identify a user with DBA authority, and path is your Sybase IQ installation directory.