The OAUG was due to hold its autumn conference in San Diego this week, albeit without any participation from Oracle. However, the group has decided to postpone the event until late November because of the terrorist attacks in New York, Washington and Pennsylvania.
Oracle refuses to take part in the OAUG's conferences and has proposed that they be merged with its own AppsWorld event: a suggestion that the independent user group rejected.
The OAUG is at a crossroads, said Joshua Greenbaum, an analyst at Enterprise Applications Consulting. He added that Oracle should not be too cavalier about its relationship with the OAUG.
"Oracle can't run its applications business without the goodwill of its customers, and that means mending fences with the OUAG," Greenbaum said.
Oracle would not comment on the dispute.
OAUG members are annoyed that Oracle is staying away from the group's conferences at a time when users are facing a major upgrade to the E-Business Suite 11i applications released last year.
"I was looking forward to being present to talk about their products," said Hem Chari, an IT analyst at GE Power Systems unit.
GE Power Systems runs Oracle's purchasing software and plans to migrate to 11i within the next two years, Chari added.
An OAUG spokesman said Oracle business partners would be able to showcase their products at the November conference.