I am BASIS admin and was trying to understand the basics of SAP Web AS Java, so was going thru the online help, after reading some documents was bit confused.
This link above provides very clear view of the Java architecture. I proceeded a head to read the internal architecture of Dispatcher as well as Server process, but the link pasted below which states the internal architecture of J2EE pushed me to a confused state.
This link states that the J2EE Engine System Architecture has 3 logical layers
1) Java Enterprise Runtime
2)J2EE Engine Components
I was unable to corelate the 3 logical layers described above to the physical components of the Java Engine as I could see that both Dispatcher & Server processes have the Managers,Services, Interfaces and Libraries.
Request you to clear my doubt. I was cross checking this theory to our Web Dynpro development system running on WAS Java SP20.
Thanks in advance.