Stopping the Upgrade Wizard on Windows
Do not stop the Upgrade Wizard unless you are confident that an error has occurred, and the Upgrade Wizard or a utility it has called is hanging. Some SQL commands issued by the Upgrade Wizard or by its utilities can take considerable time to complete.
If you are not sure whether the Upgrade Wizard is hanging, then create a service request (SR) on My Oracle Support, or contact your Oracle sales representative for Oracle Advanced Customer Services to request assistance from Oracle’s Application Expert Services.
Stopping the Upgrade Wizard can have varying effects on the RDBMS. Before restarting the Upgrade Wizard, review the RDBMS log files. Run SQL commands as needed to resolve errors found in the RDBMS log files.
To stop the Upgrade Wizard on Windows
Do one of the following:
If the Upgrade Wizard has launched a separate command window in which a utility is running, then close the command window. This terminates the utility and stops the upgrade.
In the Upgrade Wizard dialog box, click Cancel. The Upgrade Wizard will exit when the current upgrade step is complete. There might be a delay while the step completes in the RDBMS.