Changing the JDK/JRE for the Grid Host

When the Lawson Grid is installed, it is installed with a reference to a specific JDK or JRE. Similarly, when Landmark is installed, both the grid-deployed parts of Landmark and the non-grid deployed parts reference a specific JDK or JRE. If you need to change the JDK or JRE for your system, you may do that for the Lawson Grid, by configuring the Java Executable grid property. As always with grid properties, they may be configured and overridden in different contexts (see Grid Properties).

To change the JDK or JRE for the grid

  1. Navigate to the Configuration Manager for the Lawson Grid.
  2. On the Configuration Manager page, click Grid Properties.
  3. In the Property column list, click Java Executable in the Misc. Node Properties section.
  4. In the matrix, locate the column for the host whose JDK you want to change and click on the property value link for that column in the Grid-Wide row (first row). Because for Landmark, only a single grid host scenario is supported, you will select the only host listed rather than "Any Host".
  5. In the dialog box, enter the absolute path to the Java executable of the new JDK version (for example, C:/JDK1.6/bin/java.exe).
  6. Click the Save button to close the dialog box and save your changes.
  7. Persist the configuration changes by clicking the Save button in the upper left corner of the Configuration Manager.
  8. For any nodes currently running, you will need to restart them to apply the changes. Any new nodes will use the new JDK when they are started.