This time Oracle acquired Moniforce, a Netherlands-based software company whose products monitor the availability and performance of any Web application which likely to strengthen there Enterprise Manager Application  Performance management capabilities. Moniforce's existing two product WebStress and WebProbe monitors network traffic to measure the performance and availability of Web applications from the perspective of the end user.
Seems Oracle's interest is Moniforce's UXinsight module. Built on network protocol analysis technology, the software can measure performance without slowing down the monitored application or the network, according to Oracle. UXinsight can also uncover errors in logic in custom and packaged applications on non-Oracle and Oracle infrastructures. see the FAQ 
For Oracle customer, what are the benefits from Moniforceâ€™s products and services capabilities?
In a posting of frequently asked questions about the acquisition, the the key benefits highlighted:
Enabling application administrators to detect and resolve end-user experience issues before they become emergencies.
Improving application performance and availability.
Greater value from business applications.
Enhancing lifecycle automation.
Lowering cost of managing applications
Other similar products like Corvil, Quest Software, OpNet and Hewlett-Packard, which acquired some application performance management products when it bought Mercury Interactive last year.