disconnect session when creating index

Version 9.2.0.4

Has anyone ran into the issues that your session will be disconnected when you tried to create a huge index???? in My case, I tired to create an ORacle Spatial Index and my session got dis. 9.2.0.3 works fine only the problem on 9.2.0.4

anyone????

What is the ORA error?

no error on the import log file; however, it generate the trace file and I am currently working with Oracle now. I think this is a new bug in Oracle but we are not sure