difference Between central instance And application instance

[Former Member]

Hi every body can any one tell me that

what is the difference between Central instance and Application instance.

If i am using 4.7 ee with orcale data base.

[Former Member]

The term u201Cinstanceu201D is often used synonymously with u201Cserveru201D or u201Capplication serveru201D in the SAP system. This depends on the selected installation environment. You can install multiple instances on one application server.

Regards,

[Rudi_Wiesmayr]

1. Wrong forum for such a general architectural question.

2. From the SAPGUI standpoint you CAN - if you have to - log on to the central instance OR to the application server, as they have different host names. But normally you should log on using the defined logon groups.

HTH, Rudi

[Former Member]

Check these links

http://oreilly.com/catalog/sapadm/chapter/ch01.html

Basically these terms comes when you are working on live servers where all the users log into to do their daily work.

We says when we want to distribute the workload on servers we requires central instance and application servers.

Normally it is not known to common users where they are logging into...but they can login directly usign the specific Instance details of servers.

Please see this also

http://help.sap.com/saphelp_nw2004s/helpdata/en/c4/3a64e8505211d189550000e829fbbd/frameset.htm