Which progam starts java services on WAS

[former_member84834]

When I'm logged into an ECC WAS as <sid>adm and I run the command "startsap" how do the java services get started?

Specifically, I'd like to know how the jlaunch process for the dispatcher and server are started. I don't see anything in the "startsap" script that starts java for a WAS - though I do see were it tries to start the JAVA database, but I'm not asking about the server where the JAVA database installed. The WAS server in question is a dual-stack WAS.

Thanks

[Former Member · Accepted solution]

This is for dualstack NW 7.0 systems:

startsap -> reads start profile -> among others starts the dispatcher process (the classic Abap dispatcher)

if rdisp/j2ee_start = 1 is set then the j2ee is started, by the dispatcher.

Although the j2ee can be controlled via SMICM, it is the dispatcher who starts and stops it.

Doku: [Starting and Stopping the SAP Web AS ABAP+J2EE System|http://help.sap.com/erp2005_ehp_04/helpdata/DE/86/43b14041ecf10fe10000000a1550b0/frameset.htm]

Best regards Michael

Edit: btw, the J2EE central services (SCS instance) are started by startsap, the are just another instance

Edit2: the jlaunch dispatcher/server are started by jcontrol, check the documentation on the detailed j2ee startup here: [Startup, Operation and Shutdown of a Java Instance|http://help.sap.com/erp2005_ehp_04/helpdata/DE/a2/852aca5cd96f4796e51ba0f7a28926/frameset.htm]