This usually means that Oracle has exhausted its process pool and cannot continue. Frequently, the database will automatically shutdown after getting this error. To increase the number of process:
- Connect to the database as the sysdba. Load "sqlplus / as sysdba" from a windows command prompt.
- Enter "show parameter processes". For the default XE install, this value is set to 40 which is too small to run the create utility.
- To change the value enter "alter system set processes=100 scope=spfile;"
- The server needs to be restarted for this change to take effect. Enter "startup force" to restart the database.
After the database is restarted, the creation utility should run without a problem.