on 07-11-2006 4:30 PM
Hello,
At the config tool there are Java parameters of an Instance, dispatcher and server. More than that, each one of them (Instance, dispatcher and server) has classpath and java parameters at two different tabs: Bootstrap tab and General tab. What the difference between all these possibilities and when will I use each one?
Hi,
Also have a look at,
http://help.sap.com/saphelp_nw04/helpdata/en/e8/f48b33f9a3423c9e688dfa56330e79/frameset.htm
Regards,
Srinivasan T
Helpful answers=>Points
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Roy, did you really go carefully through links I gave to you ;-)?
From here
http://help.sap.com/saphelp_nw04/helpdata/en/ec/4e60148951924686c8aec9a3fd753d/frameset.htm
+Structure
The framework consists of the following components:
· JControl starts, stops, and monitors the processes of a Java instance (usually a dispatcher and several server processes). The program implements the SAP signal handling to stop the instance. JControl starts the JLaunch processes.
· JLaunch starts a Java program. It loads the JVM into its own address space and then represents the required cluster element. The program can receive from notification from the JControl process via named pipes to stop the cluster element, and terminates, if the JControl stops running (fork emulation under Windows).
· The Bootstrap JAVA program synchronizes the binary data from the Java database with the local file system and creates a property file, which describes the processes of the Java instance.
+
And this is IMHO really self explanatory step by step description of load process
http://help.sap.com/saphelp_nw04/helpdata/en/a2/852aca5cd96f4796e51ba0f7a28926/frameset.htm
Best regards, Maksim Rashchynski.
Joined parameters for server and dispatcher? Or for general and bootstrap? Or for instance and for server and dispatcher? BTW, they don`t use same JVM. There are JVM`s for dispatcher and for each server. Instance settings are applying to the instance itself and all cluster elements. IN case you are changing properties of an instance element, the changes will apply only to the selected dispatcher or server process of the instance.
Hi Roy,
Instance properties are propagated to dispatcher and servers, dispatcher properties - to dispatcher, server properties - to server.
So, if would like to apply same JVM option to all instance elements (dispatcher and servers) you should put it on instance level.
Best regards, Maksim Rashchynski.
Hi Roy,
Seems like these 2 documents are covering most of your questions:
http://help.sap.com/saphelp_nw04/helpdata/en/2e/611724f410254ca12a3f396ec5ae85/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/ef/61ca70718e4992befe589d9fb9d37b/frameset.htm
Best regards, Maksim Rashchynski.
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