Please read the FAQ:
and post sufficient details so that people can help.
Just saying you have something that is slow isn't going to allow anyone to help you.
Are you running 188.8.131.52? If so there is a known issue with direct reads where queries are bypassing the cache.
Is there locking on the underlying tables? Have you done explain plans for each query to make sure that the queries are fully tuned?
Have you run ASH/AWR reports, provided that you are licensed for them? What version of Oracle, OS type and version, etc?
Details make the difference.