Oracle Binaries and support

We can download all the base versions from

                www.otn.oracle.com

                www.edelivery.oracle.com

We can get support from Oracle thru

                www.support.oracle.com

                www.metalink.oracle.com

We can download all the patches and patchsets from

www.support.oracle.com 

or 

www.metalink.oracle.com

For every customer oracle assigns a unique number called CSI number inorder to log into  metalink.oracle.com

otn – oracle technology network

csi – customer support identifier