Migration bigger database structure Informix- Oracle : neverending process ?

I have problem: I tried to convert Informix source model to oracle model (real database structure - several tenths of tables, triggers, procedures, ... - without data). Log window "Creating oracle model" appeared and icon and text "Mapping" had been showed. And this state stayed permanent. Nothing following happened, no next changes on file 'omwb.odb' I could to see. After 6
hours i 'clicked' on 'Abort' button. On following Workbench showed message that it could not to do abort and recommended me to restart program.
Are there some limitations in Workbench for complexity of database structure ? How many time can take obviously creating of Oracle model from real (but empty) database ? Can it take more then 6 hours ?!
null

No, 6 hours is too long, something has gone wrong with the migration. Please send the error.log file (under %ORACLE_HOME%/Omwb/log) and a description of the problem to [email protected] and we shall do our best to assist you.
Regards,
Brian.

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