On some releases of AIX, you may need to install gnu tar (http://www.gnu.org/software/tar/tar.html) to extract the eclipse tar.gz file. This is because of incompatibilities between tar versions. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=82568 for further details. You can run Eclipse using the VM from IBM Developer Kit for AIX versions 1.3.0, 1.3.1, and 1.4.0. The IBM Developer Kit for AIX can be downloaded from: http://www.ibm.com/developerworks/java/jdk/aix/service.html To run Eclipse on AIX, you must ensure that your AIX install includes the necessary service updates. Please use the following command to determine the service level of an AIX fileset on your machine: lslpp -l | grep FilesetName Please see the section below that corresponds to your AIX release. AIX Version 4.3.3: For fileset X11.base.lib: If service level < 4.3.3.79, you must apply APAR IY27694 For fileset X11.motif.lib: If service level > 4.3.3.81, you must apply APAR IY41939 AIX Version 5.1: For fileset X11.base.lib: If service level < 5.1.0.25, you must apply APAR IY27695 For fileset X11.motif.lib: If service level > 5.1.0.36, you must apply APAR IY41942 AIX Version 5.2: For fileset X11.motif.lib: If service level > 5.2.0.0, you must apply APAR IY41944 IBM APARs can be downloaded from: http://techsupport.services.ibm.com/server/fixes Availability information for these fixes is as follows: APAR # Available IY27694 now (March 2003) IY27695 now (March 2003) IY41939 anticipated May 7, 2003 IY41942 anticipated May 21, 2003 IY41944 anticipated June 4, 2003