1. Working with Oracle Forms
  2. Integration
  3. Configuring and Managing Java Virtual Machines
  4. JVM Controller Logging

JVM Controller Logging

When logging is enabled, the JVM controller logs specific information to the log file.

The information are logged:

  • The values of the JVM parameters (maxsessions, classpath, and so on);

  • When a JVM controller starts and stops;

  • When a child JVM is spawned;

  • When an Forms runtime process starts a new connection, along with its process ID

    This is useful for knowing which Forms runtime processes are connected to which JVM controller for diagnostics or administration;

  • When an Forms runtime process session ends and disconnects from the JVM.

The following section are included:

Specifying JVM Default Logging Properties

Use Fusion Middleware Control to manage the properties for JVM controller logging.

  1. In the JVM Configuration page, select the the JVM configuration section.
  2. For the logging parameter, enter a valid logging value, as described in Table -34.
  3. Click Apply.

Specifying the JVM Log Directory Location

You can specify the log file directory in the JVM controller. You can also specify the default JVM controller log file location for other JVM controllers to use.

To specify the log file directory location:

  1. Create a JVM controller.
  2. Add the Log Directory parameter.

    If you have duplicated a named configuration section that has Log Directory parameter defined in it, you can edit the existing parameter.

  3. Click Apply to save the changes.
The JVM Configuration page reappears.
For information about:

Accessing Log Files

When the log file exists, an icon is displayed in the Logfile column.

To access a log file:

  • Click the Log File link in the Logfile column that is available for that JVM controller.

    The Log File page appears and displays the log information.

Deleting a Log File for a JVM Controller

Use Fusion Middleware Control to delete log files.

To delete a log file for a JVM controller:

  1. From the JVM Controllers page, select the target JVM.
  2. Click Delete Logfile.

    The Delete Confirmation dialog appears.

  3. Click Delete.

    The logfile is deleted and the JVM Controllers page reappears.

Note:

If you delete a log file of a JVM that is running, the log file will be available again when the JVM is restarted. Logging is possible only when the JVM is restarted.