How to get capacity specifications for a particular Oracle release? How to get capacity specifications for new Oracle release(Oracle 11.2.0.4)?
ie, information like  

How much schema we can create?, 

How much tables a schema can accommodate?

How much rows total instance can have?

How can I get these information? Or from where I can get these information?

Thanks in advance!!
Physical Database Limits

Logical Database Limits

The maximum number of users (schemas): 2^31 = 2147483648

The official answer to your other questions: unlimited.

The practical answer is: as many as your hardware/operating system/design can handle.