Modify variables

Use scripting and wsadmin.sh to modify variables in the application server.

Start the wsadmin scripting tool.

There are two ways to modify an application server variable. We can use an AdminTask object or an AdminConfig object.

1. Modify an application server variable.

   • Use the AdminTask object.

     • Jacl:

       $AdminTask setVariable {-interactive}

     • Jython:

       AdminTask.setVariable (['-interactive'])

   • Use the AdminConfig object.

     The following examples modify the DB2_JDBC_DRIVER_PATH variable on the node level:

     • Jacl:

       set varName DB2_JDBC_DRIVER_PATH
       set newVarValue C:/SQLLIB/java
       set node [$AdminConfig getid /Node:myNode/]
       set varSubstitutions [$AdminConfig list VariableSubstitutionEntry $node]
        foreach varSubst $varSubstitutions {
          set getVarName [$AdminConfig showAttribute $varSubst symbolicName]
          if {[string compare $getVarName $varName] == 0} {
             $AdminConfig modify $varSubst [list [list value $newVarValue]]
             break
          }  }

     • Jython:

       varName = "DB2_JDBC_DRIVER_PATH"
       newVarValue = "C:/SQLLIB/java"
       node = AdminConfig.getid("/Node:myNode/")
       varSubstitutions =
          AdminConfig.list("VariableSubstitutionEntry",node).split(java.lang.System.getProperty("line.separator"))
        for varSubst in varSubstitutions:
          getVarName = AdminConfig.showAttribute(varSubst, "symbolicName")
          if getVarName == varName:
             AdminConfig.modify(varSubst,[["value", newVarValue]])
             break

2. Save the configuration changes.

   Use the following command example to save the configuration changes:

   AdminConfig.save()

3. In a network deployment environment only, synchronize the node.

   Use the syncActiveNode or syncNode scripts in the AdminNodeManagement script library to propagate the configuration changes to node or nodes.

   • Use the syncActiveNodes script to propagate the changes to each node in the cell:
     AdminNodeManagement.syncActiveNodes()

   • Use the syncNode script to propagate the changes to a specific node:
     AdminNodeManagement.syncNode("myNode")

Related tasks

Use the wsadmin scripting AdminConfig object for scripted administration

Server settings configuration scripts

Commands for the AdminConfig object