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Stop process using Startup and Control Framework • The Signal Handler of JControl receives a stop signal from the stopsap script (UNIX) or from the Windows Service. • JControl forwards the signal through named pipes to all running JLaunch processes (Java servers and dispatchers). • The JLaunch process of a Java cluster element should react to this notification (soft shutdown) within a certain period of time. After this time has expired,the JLaunch process is terminated by JControl. When this is done, the JVM within the JLaunch process is ended, as is the JVM of the JLaunch process. 18 October 2010
JCMON Tool • The JCmon tool can be used to monitor the JControl process. JCmon is part of the Startup and Control Framework, and is located in the JControl/JLaunch home directory, that is, in the executable directory /usr/sap///SYS/exe/.... • JCmon can be started with the command JCmon pf=. • JCmon provides an administration interface for elements in the Java cluster that can be called from the operating system. 18 October 2010
Page 1 and 2: SAP BASIS Introductory Training Pro
Page 3 and 4: AS JAVA Architecture & Processes 18
Page 5 and 6: SAP AS JAVA Instance Central Instan
Page 7 and 8: Summary of AS JAVA Processes The fo
Page 9 and 10: AS JAVA Architecture • In AS Java
Page 11 and 12: Key architecture principles of Dual
Page 13 and 14: Details on request processing • T
Page 15 and 16: Transaction Processing in AS JAVA 1
Page 17 and 18: Details on Managers & Services •
Page 19 and 20: Open SQL for JAVA • If the Java p
Page 21 and 22: The JAVA Instance Concept • SAP N
Page 23 and 24: Request Processing by the dispatche
Page 25 and 26: Message & Enqueue Service • The m
Page 27 and 28: Services in the AS JAVA • The ser
Page 29 and 30: Startup & Shutdown Of AS JAVA Insta
Page 31 and 32: Sequence of Startup • The SAP Sys
Page 33 and 34: Stopping AS JAVA in UNIX • The st
Page 35 and 36: Starting/Stopping a pure AS JAVA in
Page 37 and 38: Process Information 18 October 2010
Page 39 and 40: SMICM Details • In the case of SA
Page 41 and 42: Start/Stop in UNIX • For SAP syst
Page 43 and 44: Details on the Framework • SAP pr
Page 45: Location in Windows 18 October 2010
Page 49 and 50: Logs & Trace Files in AS JAVA 18 Oc
Page 51 and 52: Administration & Configuration Tool
Page 53 and 54: Features of the Config Tool • The
Page 55 and 56: Visual Administrator • With the V
Page 57 and 58: Memory Management in AS JAVA • Th
Page 59 and 60: Explanation of the Term “Generati
Page 61 and 62: Exercise EXERCISE • Login to the

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