Solution : https://service.sap.com/sap/support/notes/710146 (SAP Service marketplace login required)
Summary :
During the installation of a J2EE engine, the SAP Configtool is used to adjust JVM settings, critical for performance tuning. Located in the J2EE Engine's directory, it allows customization of Java parameters by accessing cluster_data/instance_ID/server_ID via configtool.bat (.sh for UNIX). Each server node, including the dispatcher, necessitates individual parameter updates. Post-modification, changes are saved and the cluster restarted. The changes can be verified in the instance.properties file, which reflects new JavaParameters. Maximum Heap Size can be set via Max Heap Size control or directly as a -Xmx command, with the latter configuration taking precedence if duplicated. For further details, refer to SAP Note 736557.
Key words :
\usr\sap\c11\jc00\j2ee\configtool, terms configtool jvm parameters tuning reason, dedicated max heap size control, define maximal heap size, > command line parameter automatically, max heap size control, line id<server id>, j2ee engine directory tree, java command line parameters, max heap size
Related Notes :
| 1552973 | SAP JVM crashes with native OutOfMemoryError |
| 1321831 | General considerations when opening a NWDI support message |
| 1303953 | SAP JVM memory parameters and their names in the Config Tool |
| 1234382 | IBM i: VM Settings for SAP WebAS Java (IBM J9 JVM) |
| 1137949 | Engine does not start on AIX due to DB connection problems |
| 1054151 | JDK garbage collector profiling on HP-UX |
| 1053604 | JDK heap dump and heap profiling on HP-UX |
| 1004255 | How to create a full HPROF heap dump of J2EE Engine 6.40/7.0 |
| 898637 | Upload to KM / ICE Package Upload does not work |
| 878909 | Server/dispatcher doesn't start,ConfigurationManager hangs |
| 861333 | Very slow start of the j2ee engine on AIX with 64bit IBM JDK |
| 764417 | Information for troubleshooting of the SAP J2EE Engine 6.40 |
| 736557 | Changes made with the Config Tool are disregarded |
| 723909 | Java VM settings for J2EE 6.40/7.0 |
| 717376 | iSeries: VM Settings for SAP WebAS Java (IBM Classic JVM) |