IBM Support

Installation Manager fails when started from media that is mounted using CDFS

Technote (troubleshooting)


You start IBM Installation Manager from media that is mounted by using the CD-ROM File System (CDFS). Installation Manager fails to start with the error message:
An error has occurred. See the log file.


The issue occurs when Installation Manager reaches the upper limit for the number of descriptors that can be opened on a CDFS mounted device. The upper limit is determined by the value for the tunable kernel parameter ncdnode. The ncdnode parameter specifies the maximum number of CDFS nodes that can be in memory at one time. By default, ncdnode is set to 150 which is insufficient to run Installation Manager.

Diagnosing the problem

You might see one of the following errors when this issue occurs:

  • When you start the Installation Manager GUI, an java.lang.NoClassDefFoundError is printed to the command line and the GUI does not fully render.
  • Installation Manager fails to run and the log file contains one or both of the following exceptions: Exception in opening zip file:
    org.osgi.framework.BundleException: Exception in org.eclipse.update.internal.configurator.ConfigurationActivator.start() or bundle org.eclipse.update.configurator.

    The log file is in either the .eclipse folder or the agent data location for Installation Manager.

Resolving the problem

To resolve the issue, set ncdnode to 250. If the issue continues, increase the value for ncdnode.

To set the value, run the command:

kctune ncdnode=250

Document information

More support for: IBM Installation Manager

Software version: 1.4.4, 1.5,, 1.5.1, 1.5.2, 1.5.3, 1.6, 1.6.1, 1.6.2, 1.6.3,, 1.7, 1.7.1, 1.7.2, 1.7.3, 1.7.4,,,, 1.8, 1.8.1, 1.8.2,, 1.8.3

Operating system(s): HP-UX

Reference #: 1585451

Modified date: 13 August 2015

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