I have currently installed db2 version 9.7 in my Fedora 12 operating system and created a database instance also but how to use features of the db2 DBMS? like creation of new table or executing a SQL query because no command like "db2cc" is executing from terminal prompt.
please help me.

Maybe you could start by telling us what you did, if you created a DB2 instance, and exactly what kind of error messages you get.

If you installed DB2 Express-C, then please consult the DB2 Express-C forum for specific information on how to set up your machine for db2cc and other GUI programs. In Linux, you cannot simply start a GUI program from the command line without exporting the terminal, etc. Or, you could install the DB2 client on a remote windows machine and use db2cc from there (which is what most people do).